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Finding the Third Proportional to 8,316 and 11,930

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Solution

The third proportional to 8,316 and 11,930 is: 17,114.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316 : 11,930 = 11,930 : x
  2. Step 2: Convert to fraction form
    8,316/11,930 = 11,930/x
  3. Step 3: Cross multiply
    8,316x = 11,930 × 11,930
  4. Step 4: Simplify right side
    8,316x = 142,324,900
  5. Step 5: Solve for x
    x = 142,324,900/8,316
  6. Step 6: Final answer
    x = 17,114.59

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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.