Finding the Fourth Proportional to 13,057,432.88, 18,000,265.96 and 9,124,980.09
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Solution
The fourth proportional to 13,057,432.88, 18,000,265.96 and 9,124,980.09 is: 12,579,200.68
Step by Step Solution
- Step 1: Write the proportion equation
13,057,432.88 : 18,000,265.96 = 9,124,980.09 : x - Step 2: Convert to fraction form
13,057,432.88/18,000,265.96 = 9,124,980.09/x - Step 3: Cross multiply
13,057,432.88x = 18,000,265.96 × 9,124,980.09 - Step 4: Simplify right side
13,057,432.88x = 164,252,068,499,704.75 - Step 5: Solve for x
x = 164,252,068,499,704.75/13,057,432.88 - Step 6: Final answer
x = 12,579,200.68
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1.5x scale
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.