Finding the Fourth Proportional to 15,728,788.08, 21,704,343.12 and 8,758,938.96
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Solution
The fourth proportional to 15,728,788.08, 21,704,343.12 and 8,758,938.96 is: 12,086,564.81
Step by Step Solution
- Step 1: Write the proportion equation
15,728,788.08 : 21,704,343.12 = 8,758,938.96 : x - Step 2: Convert to fraction form
15,728,788.08/21,704,343.12 = 8,758,938.96/x - Step 3: Cross multiply
15,728,788.08x = 21,704,343.12 × 8,758,938.96 - Step 4: Simplify right side
15,728,788.08x = 190,107,016,554,975.97 - Step 5: Solve for x
x = 190,107,016,554,975.97/15,728,788.08 - Step 6: Final answer
x = 12,086,564.81
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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.