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Finding the Third Proportional to 18,654 and 38,881

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Solution

The third proportional to 18,654 and 38,881 is: 81,040.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654 : 38,881 = 38,881 : x
  2. Step 2: Convert to fraction form
    18,654/38,881 = 38,881/x
  3. Step 3: Cross multiply
    18,654x = 38,881 × 38,881
  4. Step 4: Simplify right side
    18,654x = 1,511,732,161
  5. Step 5: Solve for x
    x = 1,511,732,161/18,654
  6. Step 6: Final answer
    x = 81,040.64

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.