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Finding the Third Proportional to 8,486.72 and 18,644.91

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Solution

The third proportional to 8,486.72 and 18,644.91 is: 40,961.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.72 : 18,644.91 = 18,644.91 : x
  2. Step 2: Convert to fraction form
    8,486.72/18,644.91 = 18,644.91/x
  3. Step 3: Cross multiply
    8,486.72x = 18,644.91 × 18,644.91
  4. Step 4: Simplify right side
    8,486.72x = 347,632,529.07
  5. Step 5: Solve for x
    x = 347,632,529.07/8,486.72
  6. Step 6: Final answer
    x = 40,961.95

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.