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Finding the Third Proportional to 17,874 and 38,211

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Solution

The third proportional to 17,874 and 38,211 is: 81,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,874 : 38,211 = 38,211 : x
  2. Step 2: Convert to fraction form
    17,874/38,211 = 38,211/x
  3. Step 3: Cross multiply
    17,874x = 38,211 × 38,211
  4. Step 4: Simplify right side
    17,874x = 1,460,080,521
  5. Step 5: Solve for x
    x = 1,460,080,521/17,874
  6. Step 6: Final answer
    x = 81,687.40

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.