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Finding the Third Proportional to 8,406.75 and 12,645.75

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Solution

The third proportional to 8,406.75 and 12,645.75 is: 19,022.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,406.75 : 12,645.75 = 12,645.75 : x
  2. Step 2: Convert to fraction form
    8,406.75/12,645.75 = 12,645.75/x
  3. Step 3: Cross multiply
    8,406.75x = 12,645.75 × 12,645.75
  4. Step 4: Simplify right side
    8,406.75x = 159,914,993.06
  5. Step 5: Solve for x
    x = 159,914,993.06/8,406.75
  6. Step 6: Final answer
    x = 19,022.21

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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.