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Finding the Third Proportional to 21,874 and 34,731

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Solution

The third proportional to 21,874 and 34,731 is: 55,145.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,874 : 34,731 = 34,731 : x
  2. Step 2: Convert to fraction form
    21,874/34,731 = 34,731/x
  3. Step 3: Cross multiply
    21,874x = 34,731 × 34,731
  4. Step 4: Simplify right side
    21,874x = 1,206,242,361
  5. Step 5: Solve for x
    x = 1,206,242,361/21,874
  6. Step 6: Final answer
    x = 55,145.03

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.