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Finding the Third Proportional to 8,118 and 12,954

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Solution

The third proportional to 8,118 and 12,954 is: 20,670.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118 : 12,954 = 12,954 : x
  2. Step 2: Convert to fraction form
    8,118/12,954 = 12,954/x
  3. Step 3: Cross multiply
    8,118x = 12,954 × 12,954
  4. Step 4: Simplify right side
    8,118x = 167,806,116
  5. Step 5: Solve for x
    x = 167,806,116/8,118
  6. Step 6: Final answer
    x = 20,670.87

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.