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Finding the Third Proportional to 12,172.13 and 18,209.54

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Solution

The third proportional to 12,172.13 and 18,209.54 is: 27,241.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.13 : 18,209.54 = 18,209.54 : x
  2. Step 2: Convert to fraction form
    12,172.13/18,209.54 = 18,209.54/x
  3. Step 3: Cross multiply
    12,172.13x = 18,209.54 × 18,209.54
  4. Step 4: Simplify right side
    12,172.13x = 331,587,278.41
  5. Step 5: Solve for x
    x = 331,587,278.41/12,172.13
  6. Step 6: Final answer
    x = 27,241.52

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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.