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Finding the Fourth Proportional to 18,262.56, 27,404.97 and 12,644.73

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Solution

The fourth proportional to 18,262.56, 27,404.97 and 12,644.73 is: 18,974.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,262.56 : 27,404.97 = 12,644.73 : x
  2. Step 2: Convert to fraction form
    18,262.56/27,404.97 = 12,644.73/x
  3. Step 3: Cross multiply
    18,262.56x = 27,404.97 × 12,644.73
  4. Step 4: Simplify right side
    18,262.56x = 346,528,446.31
  5. Step 5: Solve for x
    x = 346,528,446.31/18,262.56
  6. Step 6: Final answer
    x = 18,974.80

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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.