Home / 22,660.87-31,274.11-13,710.57

Finding the Fourth Proportional to 22,660.87, 31,274.11 and 13,710.57

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Solution

The fourth proportional to 22,660.87, 31,274.11 and 13,710.57 is: 18,921.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,660.87 : 31,274.11 = 13,710.57 : x
  2. Step 2: Convert to fraction form
    22,660.87/31,274.11 = 13,710.57/x
  3. Step 3: Cross multiply
    22,660.87x = 31,274.11 × 13,710.57
  4. Step 4: Simplify right side
    22,660.87x = 428,785,874.34
  5. Step 5: Solve for x
    x = 428,785,874.34/22,660.87
  6. Step 6: Final answer
    x = 18,921.86

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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.