Aptitude - Ratio and Proportion - Discussion
Discussion Forum : Ratio and Proportion - General Questions (Q.No. 13)
13.
The fourth proportional to 5, 8, 15 is:
Answer: Option
Explanation:
Let the fourth proportional to 5, 8, 15 be x.
Then, 5 : 8 : 15 : x
5x = (8 x 15)
| x = | (8 x 15) | = 24. |
| 5 |
Discussion:
35 comments Page 4 of 4.
Main said:
1 decade ago
It should be 8x15 = 90.
5 then the answer is 18 because 90/5 = 18.
5 then the answer is 18 because 90/5 = 18.
Sasulya said:
10 years ago
Just see diff. between 3 numbers and all are odd.
5 and 8 = 3 odd number.
8 and 15 = 7 odd number.
Then next odd num after 7 is 9.
5 and 8 = 3 odd number.
8 and 15 = 7 odd number.
Then next odd num after 7 is 9.
Riba said:
9 years ago
@Kirshna.
The answer is 32.
8/15 = x/60.
The answer is 32.
8/15 = x/60.
Kirshna said:
9 years ago
If 60 is the fourth proportional to 8, 15 and x ; find x.
Please solve this.
Please solve this.
Jaskaran said:
2 decades ago
How come 5x ? Please explain in detail.
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