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Finding the Third Proportional to 8,847 and 12,789

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Solution

The third proportional to 8,847 and 12,789 is: 18,487.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,847 : 12,789 = 12,789 : x
  2. Step 2: Convert to fraction form
    8,847/12,789 = 12,789/x
  3. Step 3: Cross multiply
    8,847x = 12,789 × 12,789
  4. Step 4: Simplify right side
    8,847x = 163,558,521
  5. Step 5: Solve for x
    x = 163,558,521/8,847
  6. Step 6: Final answer
    x = 18,487.46

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.