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Finding the Third Proportional to 8,611 and 18,239

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Solution

The third proportional to 8,611 and 18,239 is: 38,632.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611 : 18,239 = 18,239 : x
  2. Step 2: Convert to fraction form
    8,611/18,239 = 18,239/x
  3. Step 3: Cross multiply
    8,611x = 18,239 × 18,239
  4. Step 4: Simplify right side
    8,611x = 332,661,121
  5. Step 5: Solve for x
    x = 332,661,121/8,611
  6. Step 6: Final answer
    x = 38,632.11

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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.