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Finding the Third Proportional to 20,163 and 31,338

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Solution

The third proportional to 20,163 and 31,338 is: 48,706.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163 : 31,338 = 31,338 : x
  2. Step 2: Convert to fraction form
    20,163/31,338 = 31,338/x
  3. Step 3: Cross multiply
    20,163x = 31,338 × 31,338
  4. Step 4: Simplify right side
    20,163x = 982,070,244
  5. Step 5: Solve for x
    x = 982,070,244/20,163
  6. Step 6: Final answer
    x = 48,706.55

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.