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Finding the Third Proportional to 21,775 and 33,645

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Solution

The third proportional to 21,775 and 33,645 is: 51,985.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775 : 33,645 = 33,645 : x
  2. Step 2: Convert to fraction form
    21,775/33,645 = 33,645/x
  3. Step 3: Cross multiply
    21,775x = 33,645 × 33,645
  4. Step 4: Simplify right side
    21,775x = 1,131,986,025
  5. Step 5: Solve for x
    x = 1,131,986,025/21,775
  6. Step 6: Final answer
    x = 51,985.58

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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.