Blog is outranking my root domain - Why and Help

[SEO-Novice]

I have an odd question concerning SERP rankings on Google along with PageRank and Google Trust. I have a website created in HTML with a WP blog created in a sub-directory. I am finding that the blog is getting relatively good rankings yet it seems the root domain is not getting any of the rank or trust passed onto it as it consistently is outranked by the blog.

In fact, for a few of our targeted keywords the root domain does not even show up at all, yet the blog does.

Our blog is #2 in Google SERPs, a top Google Place ranking, a Youtube video in the top 10 and a Google Ad place somewhere in the mix of first page ads.  The root domain is nowhere to be found.

Is there something I need to correct either on the site, in Google Webmaster or in WP Settings that I am not aware that is pushing all the Google Rank and Trust to the blog instead of the other way around?

I considered changing the WP Site URL to the root domain thinking it will pass more SEO mojo to the root. But I don't think this is the way to go.

I am kind of at a loss, any help is appreciated.

[gmk1567]

It looks that blog is helping your company to get search visibility for some keywords. If blog is not there, you may not have any search presence for these keywords.

As a first step, I would recommend you to provide main site page links on the related blog post with the appropriate anchor texts. These links should not be footer links or banner links. Think something like "related service ......".

Next step would be comparing back links of blog pages with your main site page for identifying the missed opportunities.

Hope this will help. All the best..