Home / 22,817.28-31,488.08-13,386

Finding the Fourth Proportional to 22,817.28, 31,488.08 and 13,386

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Solution

The fourth proportional to 22,817.28, 31,488.08 and 13,386 is: 18,472.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,817.28 : 31,488.08 = 13,386 : x
  2. Step 2: Convert to fraction form
    22,817.28/31,488.08 = 13,386/x
  3. Step 3: Cross multiply
    22,817.28x = 31,488.08 × 13,386
  4. Step 4: Simplify right side
    22,817.28x = 421,499,438.88
  5. Step 5: Solve for x
    x = 421,499,438.88/22,817.28
  6. Step 6: Final answer
    x = 18,472.82

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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.