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Finding the Third Proportional to 6,639 and 12,243

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Solution

The third proportional to 6,639 and 12,243 is: 22,577.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639 : 12,243 = 12,243 : x
  2. Step 2: Convert to fraction form
    6,639/12,243 = 12,243/x
  3. Step 3: Cross multiply
    6,639x = 12,243 × 12,243
  4. Step 4: Simplify right side
    6,639x = 149,891,049
  5. Step 5: Solve for x
    x = 149,891,049/6,639
  6. Step 6: Final answer
    x = 22,577.35

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.