IBM
Company
Numerical Ability
Ratio and Proportion
The fourth proportional to 5, 8, 15 is:
A. 18 B. 24
C. 19 D. 20
Read Solution (Total 7)
-
- 5:8:15:x
so x= 8*15/5
=24 - 11 years agoHelpfull: Yes(8) No(1)
- 8*15=5*x=>x=(8*15)/5=24. ans
- 9 years agoHelpfull: Yes(1) No(0)
- 5.8..15.x
24 - 9 years agoHelpfull: Yes(1) No(1)
- 5*3=15 8*3=24
- 8 years agoHelpfull: Yes(0) No(0)
- Here four terms are in proportion
5:8:15:x(the unknown 4th term)
5*x=8*15(By using the proportion formula i.e.,Product of extremes=Product of mean terms)
x=8*15/5=24. - 8 years agoHelpfull: Yes(0) No(0)
- B.24
5/8=15/x
x=24 - 8 years agoHelpfull: Yes(0) No(0)
- 5*3= 15
8*3=24 - 5 years agoHelpfull: Yes(0) No(0)
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