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Finding the Third Proportional to 11,412 and 18,108

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Solution

The third proportional to 11,412 and 18,108 is: 28,732.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,412 : 18,108 = 18,108 : x
  2. Step 2: Convert to fraction form
    11,412/18,108 = 18,108/x
  3. Step 3: Cross multiply
    11,412x = 18,108 × 18,108
  4. Step 4: Simplify right side
    11,412x = 327,899,664
  5. Step 5: Solve for x
    x = 327,899,664/11,412
  6. Step 6: Final answer
    x = 28,732.88

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.