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Finding the Third Proportional to 8,694 and 13,080

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Solution

The third proportional to 8,694 and 13,080 is: 19,678.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694 : 13,080 = 13,080 : x
  2. Step 2: Convert to fraction form
    8,694/13,080 = 13,080/x
  3. Step 3: Cross multiply
    8,694x = 13,080 × 13,080
  4. Step 4: Simplify right side
    8,694x = 171,086,400
  5. Step 5: Solve for x
    x = 171,086,400/8,694
  6. Step 6: Final answer
    x = 19,678.67

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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.