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Finding the Third Proportional to 10,912 and 15,252

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Solution

The third proportional to 10,912 and 15,252 is: 21,318.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912 : 15,252 = 15,252 : x
  2. Step 2: Convert to fraction form
    10,912/15,252 = 15,252/x
  3. Step 3: Cross multiply
    10,912x = 15,252 × 15,252
  4. Step 4: Simplify right side
    10,912x = 232,623,504
  5. Step 5: Solve for x
    x = 232,623,504/10,912
  6. Step 6: Final answer
    x = 21,318.14

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.