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Finding the Third Proportional to 8,731.50 and 18,498

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Solution

The third proportional to 8,731.50 and 18,498 is: 39,188.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.50 : 18,498 = 18,498 : x
  2. Step 2: Convert to fraction form
    8,731.50/18,498 = 18,498/x
  3. Step 3: Cross multiply
    8,731.50x = 18,498 × 18,498
  4. Step 4: Simplify right side
    8,731.50x = 342,176,004
  5. Step 5: Solve for x
    x = 342,176,004/8,731.50
  6. Step 6: Final answer
    x = 39,188.69

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.