Home / 12,306.38-18,471.87-6,475.28

Finding the Fourth Proportional to 12,306.38, 18,471.87 and 6,475.28

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Solution

The fourth proportional to 12,306.38, 18,471.87 and 6,475.28 is: 9,719.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.38 : 18,471.87 = 6,475.28 : x
  2. Step 2: Convert to fraction form
    12,306.38/18,471.87 = 6,475.28/x
  3. Step 3: Cross multiply
    12,306.38x = 18,471.87 × 6,475.28
  4. Step 4: Simplify right side
    12,306.38x = 119,610,438.01
  5. Step 5: Solve for x
    x = 119,610,438.01/12,306.38
  6. Step 6: Final answer
    x = 9,719.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.