Home / 22,728.28-31,373.60-13,299.88

Finding the Fourth Proportional to 22,728.28, 31,373.60 and 13,299.88

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Solution

The fourth proportional to 22,728.28, 31,373.60 and 13,299.88 is: 18,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,728.28 : 31,373.60 = 13,299.88 : x
  2. Step 2: Convert to fraction form
    22,728.28/31,373.60 = 13,299.88/x
  3. Step 3: Cross multiply
    22,728.28x = 31,373.60 × 13,299.88
  4. Step 4: Simplify right side
    22,728.28x = 417,265,115.17
  5. Step 5: Solve for x
    x = 417,265,115.17/22,728.28
  6. Step 6: Final answer
    x = 18,358.85

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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.