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Finding the Third Proportional to 12,380 and 18,802

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Solution

The third proportional to 12,380 and 18,802 is: 28,555.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380 : 18,802 = 18,802 : x
  2. Step 2: Convert to fraction form
    12,380/18,802 = 18,802/x
  3. Step 3: Cross multiply
    12,380x = 18,802 × 18,802
  4. Step 4: Simplify right side
    12,380x = 353,515,204
  5. Step 5: Solve for x
    x = 353,515,204/12,380
  6. Step 6: Final answer
    x = 28,555.35

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.