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Finding the Third Proportional to 8,728.50 and 18,852

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Solution

The third proportional to 8,728.50 and 18,852 is: 40,716.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.50 : 18,852 = 18,852 : x
  2. Step 2: Convert to fraction form
    8,728.50/18,852 = 18,852/x
  3. Step 3: Cross multiply
    8,728.50x = 18,852 × 18,852
  4. Step 4: Simplify right side
    8,728.50x = 355,397,904
  5. Step 5: Solve for x
    x = 355,397,904/8,728.50
  6. Step 6: Final answer
    x = 40,716.95

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.