The fourth proportional to 4, 7, 16 is:	Options:
A) 20
B) 22
C) 24
D) 26
E) 28
Let the fourth proportional to 4, 7, 16 be x.   Then, 4 : 7 : 16 : x   4x = (7 x 16)   x =	(7 x 16)/4   x=112/4= 
<gadget id="calculator">112/4</gadget>
<output>28</output>
28   Answer: Option 28
<result>E</result>
The fourth proportional to 4, 7, 16 is: