Home / 22,550.68-31,122.24-12,990.88

Finding the Fourth Proportional to 22,550.68, 31,122.24 and 12,990.88

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Solution

The fourth proportional to 22,550.68, 31,122.24 and 12,990.88 is: 17,928.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,550.68 : 31,122.24 = 12,990.88 : x
  2. Step 2: Convert to fraction form
    22,550.68/31,122.24 = 12,990.88/x
  3. Step 3: Cross multiply
    22,550.68x = 31,122.24 × 12,990.88
  4. Step 4: Simplify right side
    22,550.68x = 404,305,285.17
  5. Step 5: Solve for x
    x = 404,305,285.17/22,550.68
  6. Step 6: Final answer
    x = 17,928.74

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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.