Home / 28,841.78-43,268.80-9,121.92

Finding the Fourth Proportional to 28,841.78, 43,268.80 and 9,121.92

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Solution

The fourth proportional to 28,841.78, 43,268.80 and 9,121.92 is: 13,684.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,841.78 : 43,268.80 = 9,121.92 : x
  2. Step 2: Convert to fraction form
    28,841.78/43,268.80 = 9,121.92/x
  3. Step 3: Cross multiply
    28,841.78x = 43,268.80 × 9,121.92
  4. Step 4: Simplify right side
    28,841.78x = 394,694,532.10
  5. Step 5: Solve for x
    x = 394,694,532.10/28,841.78
  6. Step 6: Final answer
    x = 13,684.82

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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.