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Finding the Third Proportional to 8,138 and 12,179

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Solution

The third proportional to 8,138 and 12,179 is: 18,226.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138 : 12,179 = 12,179 : x
  2. Step 2: Convert to fraction form
    8,138/12,179 = 12,179/x
  3. Step 3: Cross multiply
    8,138x = 12,179 × 12,179
  4. Step 4: Simplify right side
    8,138x = 148,328,041
  5. Step 5: Solve for x
    x = 148,328,041/8,138
  6. Step 6: Final answer
    x = 18,226.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.