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Finding the Third Proportional to 11,538 and 15,212

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Solution

The third proportional to 11,538 and 15,212 is: 20,055.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,538 : 15,212 = 15,212 : x
  2. Step 2: Convert to fraction form
    11,538/15,212 = 15,212/x
  3. Step 3: Cross multiply
    11,538x = 15,212 × 15,212
  4. Step 4: Simplify right side
    11,538x = 231,404,944
  5. Step 5: Solve for x
    x = 231,404,944/11,538
  6. Step 6: Final answer
    x = 20,055.90

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.