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Finding the Third Proportional to 15,018.75 and 20,449.13

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Solution

The third proportional to 15,018.75 and 20,449.13 is: 27,842.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.75 : 20,449.13 = 20,449.13 : x
  2. Step 2: Convert to fraction form
    15,018.75/20,449.13 = 20,449.13/x
  3. Step 3: Cross multiply
    15,018.75x = 20,449.13 × 20,449.13
  4. Step 4: Simplify right side
    15,018.75x = 418,166,713.27
  5. Step 5: Solve for x
    x = 418,166,713.27/15,018.75
  6. Step 6: Final answer
    x = 27,842.98

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.