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Finding the Third Proportional to 19,830 and 28,651

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Solution

The third proportional to 19,830 and 28,651 is: 41,395.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,830 : 28,651 = 28,651 : x
  2. Step 2: Convert to fraction form
    19,830/28,651 = 28,651/x
  3. Step 3: Cross multiply
    19,830x = 28,651 × 28,651
  4. Step 4: Simplify right side
    19,830x = 820,879,801
  5. Step 5: Solve for x
    x = 820,879,801/19,830
  6. Step 6: Final answer
    x = 41,395.85

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.