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Finding the Third Proportional to 15,107.50 and 16,667

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Solution

The third proportional to 15,107.50 and 16,667 is: 18,387.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.50 : 16,667 = 16,667 : x
  2. Step 2: Convert to fraction form
    15,107.50/16,667 = 16,667/x
  3. Step 3: Cross multiply
    15,107.50x = 16,667 × 16,667
  4. Step 4: Simplify right side
    15,107.50x = 277,788,889
  5. Step 5: Solve for x
    x = 277,788,889/15,107.50
  6. Step 6: Final answer
    x = 18,387.48

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.