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Finding the Third Proportional to 12,756 and 15,348

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Solution

The third proportional to 12,756 and 15,348 is: 18,466.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756 : 15,348 = 15,348 : x
  2. Step 2: Convert to fraction form
    12,756/15,348 = 15,348/x
  3. Step 3: Cross multiply
    12,756x = 15,348 × 15,348
  4. Step 4: Simplify right side
    12,756x = 235,561,104
  5. Step 5: Solve for x
    x = 235,561,104/12,756
  6. Step 6: Final answer
    x = 18,466.69

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.