Home / 22,691.28-31,315.92-13,262.88

Finding the Fourth Proportional to 22,691.28, 31,315.92 and 13,262.88

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Solution

The fourth proportional to 22,691.28, 31,315.92 and 13,262.88 is: 18,303.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,691.28 : 31,315.92 = 13,262.88 : x
  2. Step 2: Convert to fraction form
    22,691.28/31,315.92 = 13,262.88/x
  3. Step 3: Cross multiply
    22,691.28x = 31,315.92 × 13,262.88
  4. Step 4: Simplify right side
    22,691.28x = 415,339,289.05
  5. Step 5: Solve for x
    x = 415,339,289.05/22,691.28
  6. Step 6: Final answer
    x = 18,303.92

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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.