Finding the Fourth Proportional to 15,785,790.06, 21,784,390.29 and 8,542,446.06
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Solution
The fourth proportional to 15,785,790.06, 21,784,390.29 and 8,542,446.06 is: 11,788,575.57
Step by Step Solution
- Step 1: Write the proportion equation
15,785,790.06 : 21,784,390.29 = 8,542,446.06 : x - Step 2: Convert to fraction form
15,785,790.06/21,784,390.29 = 8,542,446.06/x - Step 3: Cross multiply
15,785,790.06x = 21,784,390.29 × 8,542,446.06 - Step 4: Simplify right side
15,785,790.06x = 186,091,979,002,312.75 - Step 5: Solve for x
x = 186,091,979,002,312.75/15,785,790.06 - Step 6: Final answer
x = 11,788,575.57
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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.