Home / 28,755.20-39,680-16,177.52

Finding the Fourth Proportional to 28,755.20, 39,680 and 16,177.52

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Solution

The fourth proportional to 28,755.20, 39,680 and 16,177.52 is: 22,323.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,755.20 : 39,680 = 16,177.52 : x
  2. Step 2: Convert to fraction form
    28,755.20/39,680 = 16,177.52/x
  3. Step 3: Cross multiply
    28,755.20x = 39,680 × 16,177.52
  4. Step 4: Simplify right side
    28,755.20x = 641,923,993.60
  5. Step 5: Solve for x
    x = 641,923,993.60/28,755.20
  6. Step 6: Final answer
    x = 22,323.75

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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.