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Finding the Fourth Proportional to 15,843.73, 21,862.87 and 9,469.07

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Solution

The fourth proportional to 15,843.73, 21,862.87 and 9,469.07 is: 13,066.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,843.73 : 21,862.87 = 9,469.07 : x
  2. Step 2: Convert to fraction form
    15,843.73/21,862.87 = 9,469.07/x
  3. Step 3: Cross multiply
    15,843.73x = 21,862.87 × 9,469.07
  4. Step 4: Simplify right side
    15,843.73x = 207,021,046.43
  5. Step 5: Solve for x
    x = 207,021,046.43/15,843.73
  6. Step 6: Final answer
    x = 13,066.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.