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Finding the Third Proportional to 18,639 and 41,238

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Solution

The third proportional to 18,639 and 41,238 is: 91,237.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639 : 41,238 = 41,238 : x
  2. Step 2: Convert to fraction form
    18,639/41,238 = 41,238/x
  3. Step 3: Cross multiply
    18,639x = 41,238 × 41,238
  4. Step 4: Simplify right side
    18,639x = 1,700,572,644
  5. Step 5: Solve for x
    x = 1,700,572,644/18,639
  6. Step 6: Final answer
    x = 91,237.33

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.