Finding the Fourth Proportional to 15,167,711.68, 20,931,516.12 and 8,292,194.08
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Solution
The fourth proportional to 15,167,711.68, 20,931,516.12 and 8,292,194.08 is: 11,443,268.29
Step by Step Solution
- Step 1: Write the proportion equation
15,167,711.68 : 20,931,516.12 = 8,292,194.08 : x - Step 2: Convert to fraction form
15,167,711.68/20,931,516.12 = 8,292,194.08/x - Step 3: Cross multiply
15,167,711.68x = 20,931,516.12 × 8,292,194.08 - Step 4: Simplify right side
15,167,711.68x = 173,568,194,055,688.59 - Step 5: Solve for x
x = 173,568,194,055,688.59/15,167,711.68 - Step 6: Final answer
x = 11,443,268.29
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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.