Finding the Fourth Proportional to 21,718,654.13, 29,976,962.33 and 12,431,608.44
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Solution
The fourth proportional to 21,718,654.13, 29,976,962.33 and 12,431,608.44 is: 17,158,607.33
Step by Step Solution
- Step 1: Write the proportion equation
21,718,654.13 : 29,976,962.33 = 12,431,608.44 : x - Step 2: Convert to fraction form
21,718,654.13/29,976,962.33 = 12,431,608.44/x - Step 3: Cross multiply
21,718,654.13x = 29,976,962.33 × 12,431,608.44 - Step 4: Simplify right side
21,718,654.13x = 372,661,857,845,032 - Step 5: Solve for x
x = 372,661,857,845,032/21,718,654.13 - Step 6: Final answer
x = 17,158,607.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.