Home / 22,716.92-31,351.32-12,645.20

Finding the Fourth Proportional to 22,716.92, 31,351.32 and 12,645.20

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Solution

The fourth proportional to 22,716.92, 31,351.32 and 12,645.20 is: 17,451.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,716.92 : 31,351.32 = 12,645.20 : x
  2. Step 2: Convert to fraction form
    22,716.92/31,351.32 = 12,645.20/x
  3. Step 3: Cross multiply
    22,716.92x = 31,351.32 × 12,645.20
  4. Step 4: Simplify right side
    22,716.92x = 396,443,711.66
  5. Step 5: Solve for x
    x = 396,443,711.66/22,716.92
  6. Step 6: Final answer
    x = 17,451.47

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Half scale
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Double scale
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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.