The fourth proportional to 10, 20 and 25 is?
Options.
A) 21 B) 66 C) 88 D) 50 E) 26
(20*25)/10= 
<gadget id="calculator">(20*25)/10</gadget>
<output>50</output>
50   Answer: 50
<result>D</result>
The fourth proportional to 10, 20 and 25 is?