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Finding the Third Proportional to 7,815.66 and 11,724.75

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Solution

The third proportional to 7,815.66 and 11,724.75 is: 17,589.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.66 : 11,724.75 = 11,724.75 : x
  2. Step 2: Convert to fraction form
    7,815.66/11,724.75 = 11,724.75/x
  3. Step 3: Cross multiply
    7,815.66x = 11,724.75 × 11,724.75
  4. Step 4: Simplify right side
    7,815.66x = 137,469,762.56
  5. Step 5: Solve for x
    x = 137,469,762.56/7,815.66
  6. Step 6: Final answer
    x = 17,589.02

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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.