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Finding the Third Proportional to 12,882 and 20,075

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Solution

The third proportional to 12,882 and 20,075 is: 31,284.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882 : 20,075 = 20,075 : x
  2. Step 2: Convert to fraction form
    12,882/20,075 = 20,075/x
  3. Step 3: Cross multiply
    12,882x = 20,075 × 20,075
  4. Step 4: Simplify right side
    12,882x = 403,005,625
  5. Step 5: Solve for x
    x = 403,005,625/12,882
  6. Step 6: Final answer
    x = 31,284.40

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.