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Finding the Third Proportional to 8,472 and 18,579

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Solution

The third proportional to 8,472 and 18,579 is: 40,743.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472 : 18,579 = 18,579 : x
  2. Step 2: Convert to fraction form
    8,472/18,579 = 18,579/x
  3. Step 3: Cross multiply
    8,472x = 18,579 × 18,579
  4. Step 4: Simplify right side
    8,472x = 345,179,241
  5. Step 5: Solve for x
    x = 345,179,241/8,472
  6. Step 6: Final answer
    x = 40,743.54

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.