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Finding the Third Proportional to 8,481.75 and 12,815.44

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Solution

The third proportional to 8,481.75 and 12,815.44 is: 19,363.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.75 : 12,815.44 = 12,815.44 : x
  2. Step 2: Convert to fraction form
    8,481.75/12,815.44 = 12,815.44/x
  3. Step 3: Cross multiply
    8,481.75x = 12,815.44 × 12,815.44
  4. Step 4: Simplify right side
    8,481.75x = 164,235,438.32
  5. Step 5: Solve for x
    x = 164,235,438.32/8,481.75
  6. Step 6: Final answer
    x = 19,363.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.