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Finding the Third Proportional to 15,476 and 17,108

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Solution

The third proportional to 15,476 and 17,108 is: 18,912.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476 : 17,108 = 17,108 : x
  2. Step 2: Convert to fraction form
    15,476/17,108 = 17,108/x
  3. Step 3: Cross multiply
    15,476x = 17,108 × 17,108
  4. Step 4: Simplify right side
    15,476x = 292,683,664
  5. Step 5: Solve for x
    x = 292,683,664/15,476
  6. Step 6: Final answer
    x = 18,912.10

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.