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Finding the Third Proportional to 6,821 and 11,075

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Solution

The third proportional to 6,821 and 11,075 is: 17,982.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821 : 11,075 = 11,075 : x
  2. Step 2: Convert to fraction form
    6,821/11,075 = 11,075/x
  3. Step 3: Cross multiply
    6,821x = 11,075 × 11,075
  4. Step 4: Simplify right side
    6,821x = 122,655,625
  5. Step 5: Solve for x
    x = 122,655,625/6,821
  6. Step 6: Final answer
    x = 17,982.06

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.