Find the fourth proportion to 2,5,12	Choose the correct choice from the following choices
A) 18  B) 12  C) 40  D) 30  E) 24
Explanation:   2:5 :: 12:x   =&gt; 2/5 = 12/x   =&gt; x = 60/2   =&gt; x = 30   Option 30
<result>D</result>
Find the fourth proportion to 2,5,12