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Finding the Third Proportional to 6,621 and 11,682

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Solution

The third proportional to 6,621 and 11,682 is: 20,611.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621 : 11,682 = 11,682 : x
  2. Step 2: Convert to fraction form
    6,621/11,682 = 11,682/x
  3. Step 3: Cross multiply
    6,621x = 11,682 × 11,682
  4. Step 4: Simplify right side
    6,621x = 136,469,124
  5. Step 5: Solve for x
    x = 136,469,124/6,621
  6. Step 6: Final answer
    x = 20,611.56

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.