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Finding the Fourth Proportional to 18,791.92, 28,122.62 and 11,673.24

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Solution

The fourth proportional to 18,791.92, 28,122.62 and 11,673.24 is: 17,469.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.92 : 28,122.62 = 11,673.24 : x
  2. Step 2: Convert to fraction form
    18,791.92/28,122.62 = 11,673.24/x
  3. Step 3: Cross multiply
    18,791.92x = 28,122.62 × 11,673.24
  4. Step 4: Simplify right side
    18,791.92x = 328,282,040.79
  5. Step 5: Solve for x
    x = 328,282,040.79/18,791.92
  6. Step 6: Final answer
    x = 17,469.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.