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Finding the Third Proportional to 8,905 and 12,725

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Solution

The third proportional to 8,905 and 12,725 is: 18,183.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905 : 12,725 = 12,725 : x
  2. Step 2: Convert to fraction form
    8,905/12,725 = 12,725/x
  3. Step 3: Cross multiply
    8,905x = 12,725 × 12,725
  4. Step 4: Simplify right side
    8,905x = 161,925,625
  5. Step 5: Solve for x
    x = 161,925,625/8,905
  6. Step 6: Final answer
    x = 18,183.67

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.