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Finding the Third Proportional to 8,039.25 and 11,319.75

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Solution

The third proportional to 8,039.25 and 11,319.75 is: 15,938.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,039.25 : 11,319.75 = 11,319.75 : x
  2. Step 2: Convert to fraction form
    8,039.25/11,319.75 = 11,319.75/x
  3. Step 3: Cross multiply
    8,039.25x = 11,319.75 × 11,319.75
  4. Step 4: Simplify right side
    8,039.25x = 128,136,740.06
  5. Step 5: Solve for x
    x = 128,136,740.06/8,039.25
  6. Step 6: Final answer
    x = 15,938.89

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.