Finding the Fourth Proportional to 27,731,167.36, 38,267,861.28 and 15,172,160.38
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Solution
The fourth proportional to 27,731,167.36, 38,267,861.28 and 15,172,160.38 is: 20,936,952.32
Step by Step Solution
- Step 1: Write the proportion equation
27,731,167.36 : 38,267,861.28 = 15,172,160.38 : x - Step 2: Convert to fraction form
27,731,167.36/38,267,861.28 = 15,172,160.38/x - Step 3: Cross multiply
27,731,167.36x = 38,267,861.28 × 15,172,160.38 - Step 4: Simplify right side
27,731,167.36x = 580,606,128,739,752.12 - Step 5: Solve for x
x = 580,606,128,739,752.12/27,731,167.36 - Step 6: Final answer
x = 20,936,952.32
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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.