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Finding the Third Proportional to 15,916 and 17,302

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Solution

The third proportional to 15,916 and 17,302 is: 18,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,916 : 17,302 = 17,302 : x
  2. Step 2: Convert to fraction form
    15,916/17,302 = 17,302/x
  3. Step 3: Cross multiply
    15,916x = 17,302 × 17,302
  4. Step 4: Simplify right side
    15,916x = 299,359,204
  5. Step 5: Solve for x
    x = 299,359,204/15,916
  6. Step 6: Final answer
    x = 18,808.70

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.