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Finding the Third Proportional to 18,695 and 39,811

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Solution

The third proportional to 18,695 and 39,811 is: 84,777.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695 : 39,811 = 39,811 : x
  2. Step 2: Convert to fraction form
    18,695/39,811 = 39,811/x
  3. Step 3: Cross multiply
    18,695x = 39,811 × 39,811
  4. Step 4: Simplify right side
    18,695x = 1,584,915,721
  5. Step 5: Solve for x
    x = 1,584,915,721/18,695
  6. Step 6: Final answer
    x = 84,777.52

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.