Question 984919
<s>The way the description is written makes it meaningless.  Even so, a proportion can be found for what you try to present.  The description tries to equate 4:3 to 28:b, and you want to find this unknown b.</s>


Say or write it like this:
<i>The ratio of the number of my textbooks to my story books is 4:3.  If the actual number of my textbooks is 28, then how many story books do I have?</i>


{{{4/3=28/b}}}


You should see the 28 cut into four equal parts, each being 7.  b will satisfy the proportion if it is 21.


b=21.