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Finding the Third Proportional to 12,339 and 18,982.50

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Solution

The third proportional to 12,339 and 18,982.50 is: 29,202.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339 : 18,982.50 = 18,982.50 : x
  2. Step 2: Convert to fraction form
    12,339/18,982.50 = 18,982.50/x
  3. Step 3: Cross multiply
    12,339x = 18,982.50 × 18,982.50
  4. Step 4: Simplify right side
    12,339x = 360,335,306.25
  5. Step 5: Solve for x
    x = 360,335,306.25/12,339
  6. Step 6: Final answer
    x = 29,202.96

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.