Finding the Fourth Proportional to 20,561,562.15, 28,373,982.33 and 12,306,172.96
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Solution
The fourth proportional to 20,561,562.15, 28,373,982.33 and 12,306,172.96 is: 16,981,936.08
Step by Step Solution
- Step 1: Write the proportion equation
20,561,562.15 : 28,373,982.33 = 12,306,172.96 : x - Step 2: Convert to fraction form
20,561,562.15/28,373,982.33 = 12,306,172.96/x - Step 3: Cross multiply
20,561,562.15x = 28,373,982.33 × 12,306,172.96 - Step 4: Simplify right side
20,561,562.15x = 349,175,134,129,357.19 - Step 5: Solve for x
x = 349,175,134,129,357.19/20,561,562.15 - Step 6: Final answer
x = 16,981,936.08
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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.