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Finding the Third Proportional to 7,914 and 12,963

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Solution

The third proportional to 7,914 and 12,963 is: 21,233.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,914 : 12,963 = 12,963 : x
  2. Step 2: Convert to fraction form
    7,914/12,963 = 12,963/x
  3. Step 3: Cross multiply
    7,914x = 12,963 × 12,963
  4. Step 4: Simplify right side
    7,914x = 168,039,369
  5. Step 5: Solve for x
    x = 168,039,369/7,914
  6. Step 6: Final answer
    x = 21,233.18

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.