Home / 20,666.97-28,531.31-16,589.43

Finding the Fourth Proportional to 20,666.97, 28,531.31 and 16,589.43

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Solution

The fourth proportional to 20,666.97, 28,531.31 and 16,589.43 is: 22,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.97 : 28,531.31 = 16,589.43 : x
  2. Step 2: Convert to fraction form
    20,666.97/28,531.31 = 16,589.43/x
  3. Step 3: Cross multiply
    20,666.97x = 28,531.31 × 16,589.43
  4. Step 4: Simplify right side
    20,666.97x = 473,318,087.11
  5. Step 5: Solve for x
    x = 473,318,087.11/20,666.97
  6. Step 6: Final answer
    x = 22,902.15

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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.