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Finding the Fourth Proportional to 18,021.80, 27,032.80 and 8,149.52

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Solution

The fourth proportional to 18,021.80, 27,032.80 and 8,149.52 is: 12,224.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,021.80 : 27,032.80 = 8,149.52 : x
  2. Step 2: Convert to fraction form
    18,021.80/27,032.80 = 8,149.52/x
  3. Step 3: Cross multiply
    18,021.80x = 27,032.80 × 8,149.52
  4. Step 4: Simplify right side
    18,021.80x = 220,304,344.26
  5. Step 5: Solve for x
    x = 220,304,344.26/18,021.80
  6. Step 6: Final answer
    x = 12,224.33

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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.