Home / 20,854.89-31,249.94-13,057.29

Finding the Fourth Proportional to 20,854.89, 31,249.94 and 13,057.29

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Solution

The fourth proportional to 20,854.89, 31,249.94 and 13,057.29 is: 19,565.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.89 : 31,249.94 = 13,057.29 : x
  2. Step 2: Convert to fraction form
    20,854.89/31,249.94 = 13,057.29/x
  3. Step 3: Cross multiply
    20,854.89x = 31,249.94 × 13,057.29
  4. Step 4: Simplify right side
    20,854.89x = 408,039,463.78
  5. Step 5: Solve for x
    x = 408,039,463.78/20,854.89
  6. Step 6: Final answer
    x = 19,565.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.