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Finding the Third Proportional to 11,928 and 15,444

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Solution

The third proportional to 11,928 and 15,444 is: 19,996.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928 : 15,444 = 15,444 : x
  2. Step 2: Convert to fraction form
    11,928/15,444 = 15,444/x
  3. Step 3: Cross multiply
    11,928x = 15,444 × 15,444
  4. Step 4: Simplify right side
    11,928x = 238,517,136
  5. Step 5: Solve for x
    x = 238,517,136/11,928
  6. Step 6: Final answer
    x = 19,996.41

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.