Home / 22,761.88-31,399.45-18,517.61

Finding the Fourth Proportional to 22,761.88, 31,399.45 and 18,517.61

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Solution

The fourth proportional to 22,761.88, 31,399.45 and 18,517.61 is: 25,544.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,761.88 : 31,399.45 = 18,517.61 : x
  2. Step 2: Convert to fraction form
    22,761.88/31,399.45 = 18,517.61/x
  3. Step 3: Cross multiply
    22,761.88x = 31,399.45 × 18,517.61
  4. Step 4: Simplify right side
    22,761.88x = 581,442,801.52
  5. Step 5: Solve for x
    x = 581,442,801.52/22,761.88
  6. Step 6: Final answer
    x = 25,544.59

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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.