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Finding the Third Proportional to 8,563.78 and 18,679.78

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Solution

The third proportional to 8,563.78 and 18,679.78 is: 40,745.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,563.78 : 18,679.78 = 18,679.78 : x
  2. Step 2: Convert to fraction form
    8,563.78/18,679.78 = 18,679.78/x
  3. Step 3: Cross multiply
    8,563.78x = 18,679.78 × 18,679.78
  4. Step 4: Simplify right side
    8,563.78x = 348,934,227.55
  5. Step 5: Solve for x
    x = 348,934,227.55/8,563.78
  6. Step 6: Final answer
    x = 40,745.35

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.