Home / 28,979.20-43,469.12-9,257.60

Finding the Fourth Proportional to 28,979.20, 43,469.12 and 9,257.60

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Solution

The fourth proportional to 28,979.20, 43,469.12 and 9,257.60 is: 13,886.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.20 : 43,469.12 = 9,257.60 : x
  2. Step 2: Convert to fraction form
    28,979.20/43,469.12 = 9,257.60/x
  3. Step 3: Cross multiply
    28,979.20x = 43,469.12 × 9,257.60
  4. Step 4: Simplify right side
    28,979.20x = 402,419,725.31
  5. Step 5: Solve for x
    x = 402,419,725.31/28,979.20
  6. Step 6: Final answer
    x = 13,886.50

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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.