Home / 22,721.43-31,355.23-12,649.87

Finding the Fourth Proportional to 22,721.43, 31,355.23 and 12,649.87

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Solution

The fourth proportional to 22,721.43, 31,355.23 and 12,649.87 is: 17,456.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.43 : 31,355.23 = 12,649.87 : x
  2. Step 2: Convert to fraction form
    22,721.43/31,355.23 = 12,649.87/x
  3. Step 3: Cross multiply
    22,721.43x = 31,355.23 × 12,649.87
  4. Step 4: Simplify right side
    22,721.43x = 396,639,583.32
  5. Step 5: Solve for x
    x = 396,639,583.32/22,721.43
  6. Step 6: Final answer
    x = 17,456.63

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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.