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Finding the Third Proportional to 18,902 and 39,626

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Solution

The third proportional to 18,902 and 39,626 is: 83,071.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902 : 39,626 = 39,626 : x
  2. Step 2: Convert to fraction form
    18,902/39,626 = 39,626/x
  3. Step 3: Cross multiply
    18,902x = 39,626 × 39,626
  4. Step 4: Simplify right side
    18,902x = 1,570,219,876
  5. Step 5: Solve for x
    x = 1,570,219,876/18,902
  6. Step 6: Final answer
    x = 83,071.63

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.