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Finding the Third Proportional to 16,830 and 18,963

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Solution

The third proportional to 16,830 and 18,963 is: 21,366.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,830 : 18,963 = 18,963 : x
  2. Step 2: Convert to fraction form
    16,830/18,963 = 18,963/x
  3. Step 3: Cross multiply
    16,830x = 18,963 × 18,963
  4. Step 4: Simplify right side
    16,830x = 359,595,369
  5. Step 5: Solve for x
    x = 359,595,369/16,830
  6. Step 6: Final answer
    x = 21,366.33

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.