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Finding the Third Proportional to 8,330.75 and 12,520.25

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Solution

The third proportional to 8,330.75 and 12,520.25 is: 18,816.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,330.75 : 12,520.25 = 12,520.25 : x
  2. Step 2: Convert to fraction form
    8,330.75/12,520.25 = 12,520.25/x
  3. Step 3: Cross multiply
    8,330.75x = 12,520.25 × 12,520.25
  4. Step 4: Simplify right side
    8,330.75x = 156,756,660.06
  5. Step 5: Solve for x
    x = 156,756,660.06/8,330.75
  6. Step 6: Final answer
    x = 18,816.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.