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Finding the Fourth Proportional to 18,306.31, 27,452.97 and 7,912.39

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Solution

The fourth proportional to 18,306.31, 27,452.97 and 7,912.39 is: 11,865.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306.31 : 27,452.97 = 7,912.39 : x
  2. Step 2: Convert to fraction form
    18,306.31/27,452.97 = 7,912.39/x
  3. Step 3: Cross multiply
    18,306.31x = 27,452.97 × 7,912.39
  4. Step 4: Simplify right side
    18,306.31x = 217,218,605.30
  5. Step 5: Solve for x
    x = 217,218,605.30/18,306.31
  6. Step 6: Final answer
    x = 11,865.78

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1.5x scale

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.