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Finding the Third Proportional to 20,691 and 33,075

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Solution

The third proportional to 20,691 and 33,075 is: 52,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691 : 33,075 = 33,075 : x
  2. Step 2: Convert to fraction form
    20,691/33,075 = 33,075/x
  3. Step 3: Cross multiply
    20,691x = 33,075 × 33,075
  4. Step 4: Simplify right side
    20,691x = 1,093,955,625
  5. Step 5: Solve for x
    x = 1,093,955,625/20,691
  6. Step 6: Final answer
    x = 52,871.09

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.