Home / 22,490.61-31,046.13-13,545.78

Finding the Fourth Proportional to 22,490.61, 31,046.13 and 13,545.78

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Solution

The fourth proportional to 22,490.61, 31,046.13 and 13,545.78 is: 18,698.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,490.61 : 31,046.13 = 13,545.78 : x
  2. Step 2: Convert to fraction form
    22,490.61/31,046.13 = 13,545.78/x
  3. Step 3: Cross multiply
    22,490.61x = 31,046.13 × 13,545.78
  4. Step 4: Simplify right side
    22,490.61x = 420,544,046.83
  5. Step 5: Solve for x
    x = 420,544,046.83/22,490.61
  6. Step 6: Final answer
    x = 18,698.65

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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.