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Finding the Third Proportional to 12,000 and 18,812

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Solution

The third proportional to 12,000 and 18,812 is: 29,490.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000 : 18,812 = 18,812 : x
  2. Step 2: Convert to fraction form
    12,000/18,812 = 18,812/x
  3. Step 3: Cross multiply
    12,000x = 18,812 × 18,812
  4. Step 4: Simplify right side
    12,000x = 353,891,344
  5. Step 5: Solve for x
    x = 353,891,344/12,000
  6. Step 6: Final answer
    x = 29,490.95

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.