Finding the Fourth Proportional to 27,559,379.29, 38,031,641.61 and 15,169,207.81
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Solution
The fourth proportional to 27,559,379.29, 38,031,641.61 and 15,169,207.81 is: 20,933,340.66
Step by Step Solution
- Step 1: Write the proportion equation
27,559,379.29 : 38,031,641.61 = 15,169,207.81 : x - Step 2: Convert to fraction form
27,559,379.29/38,031,641.61 = 15,169,207.81/x - Step 3: Cross multiply
27,559,379.29x = 38,031,641.61 × 15,169,207.81 - Step 4: Simplify right side
27,559,379.29x = 576,909,874,937,533 - Step 5: Solve for x
x = 576,909,874,937,533/27,559,379.29 - Step 6: Final answer
x = 20,933,340.66
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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.