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Finding the Third Proportional to 9,119 and 13,679

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Solution

The third proportional to 9,119 and 13,679 is: 20,519.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119 : 13,679 = 13,679 : x
  2. Step 2: Convert to fraction form
    9,119/13,679 = 13,679/x
  3. Step 3: Cross multiply
    9,119x = 13,679 × 13,679
  4. Step 4: Simplify right side
    9,119x = 187,115,041
  5. Step 5: Solve for x
    x = 187,115,041/9,119
  6. Step 6: Final answer
    x = 20,519.25

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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.