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Finding the Third Proportional to 8,292.50 and 17,921

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Solution

The third proportional to 8,292.50 and 17,921 is: 38,729.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,292.50 : 17,921 = 17,921 : x
  2. Step 2: Convert to fraction form
    8,292.50/17,921 = 17,921/x
  3. Step 3: Cross multiply
    8,292.50x = 17,921 × 17,921
  4. Step 4: Simplify right side
    8,292.50x = 321,162,241
  5. Step 5: Solve for x
    x = 321,162,241/8,292.50
  6. Step 6: Final answer
    x = 38,729.24

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.