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Finding the Third Proportional to 12,551 and 18,787

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Solution

The third proportional to 12,551 and 18,787 is: 28,121.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551 : 18,787 = 18,787 : x
  2. Step 2: Convert to fraction form
    12,551/18,787 = 18,787/x
  3. Step 3: Cross multiply
    12,551x = 18,787 × 18,787
  4. Step 4: Simplify right side
    12,551x = 352,951,369
  5. Step 5: Solve for x
    x = 352,951,369/12,551
  6. Step 6: Final answer
    x = 28,121.37

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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.