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Finding the Third Proportional to 8,173.50 and 12,679

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Solution

The third proportional to 8,173.50 and 12,679 is: 19,668.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,173.50 : 12,679 = 12,679 : x
  2. Step 2: Convert to fraction form
    8,173.50/12,679 = 12,679/x
  3. Step 3: Cross multiply
    8,173.50x = 12,679 × 12,679
  4. Step 4: Simplify right side
    8,173.50x = 160,757,041
  5. Step 5: Solve for x
    x = 160,757,041/8,173.50
  6. Step 6: Final answer
    x = 19,668.08

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.