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Finding the Third Proportional to 15,507.56 and 18,909.56

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Solution

The third proportional to 15,507.56 and 18,909.56 is: 23,057.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.56 : 18,909.56 = 18,909.56 : x
  2. Step 2: Convert to fraction form
    15,507.56/18,909.56 = 18,909.56/x
  3. Step 3: Cross multiply
    15,507.56x = 18,909.56 × 18,909.56
  4. Step 4: Simplify right side
    15,507.56x = 357,571,553.94
  5. Step 5: Solve for x
    x = 357,571,553.94/15,507.56
  6. Step 6: Final answer
    x = 23,057.88

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.