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Finding the Third Proportional to 8,431 and 18,475

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Solution

The third proportional to 8,431 and 18,475 is: 40,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431 : 18,475 = 18,475 : x
  2. Step 2: Convert to fraction form
    8,431/18,475 = 18,475/x
  3. Step 3: Cross multiply
    8,431x = 18,475 × 18,475
  4. Step 4: Simplify right side
    8,431x = 341,325,625
  5. Step 5: Solve for x
    x = 341,325,625/8,431
  6. Step 6: Final answer
    x = 40,484.60

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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.