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Finding the Third Proportional to 12,870 and 19,344

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Solution

The third proportional to 12,870 and 19,344 is: 29,074.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,870 : 19,344 = 19,344 : x
  2. Step 2: Convert to fraction form
    12,870/19,344 = 19,344/x
  3. Step 3: Cross multiply
    12,870x = 19,344 × 19,344
  4. Step 4: Simplify right side
    12,870x = 374,190,336
  5. Step 5: Solve for x
    x = 374,190,336/12,870
  6. Step 6: Final answer
    x = 29,074.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.