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Finding the Third Proportional to 13,521.38 and 20,169.56

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Solution

The third proportional to 13,521.38 and 20,169.56 is: 30,086.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.38 : 20,169.56 = 20,169.56 : x
  2. Step 2: Convert to fraction form
    13,521.38/20,169.56 = 20,169.56/x
  3. Step 3: Cross multiply
    13,521.38x = 20,169.56 × 20,169.56
  4. Step 4: Simplify right side
    13,521.38x = 406,811,251.44
  5. Step 5: Solve for x
    x = 406,811,251.44/13,521.38
  6. Step 6: Final answer
    x = 30,086.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.