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Finding the Third Proportional to 8,669 and 12,396.50

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Solution

The third proportional to 8,669 and 12,396.50 is: 17,726.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669 : 12,396.50 = 12,396.50 : x
  2. Step 2: Convert to fraction form
    8,669/12,396.50 = 12,396.50/x
  3. Step 3: Cross multiply
    8,669x = 12,396.50 × 12,396.50
  4. Step 4: Simplify right side
    8,669x = 153,673,212.25
  5. Step 5: Solve for x
    x = 153,673,212.25/8,669
  6. Step 6: Final answer
    x = 17,726.75

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.