Home / 28,251.20-42,376.80-17,179.60

Finding the Fourth Proportional to 28,251.20, 42,376.80 and 17,179.60

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Solution

The fourth proportional to 28,251.20, 42,376.80 and 17,179.60 is: 25,769.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.20 : 42,376.80 = 17,179.60 : x
  2. Step 2: Convert to fraction form
    28,251.20/42,376.80 = 17,179.60/x
  3. Step 3: Cross multiply
    28,251.20x = 42,376.80 × 17,179.60
  4. Step 4: Simplify right side
    28,251.20x = 728,016,473.28
  5. Step 5: Solve for x
    x = 728,016,473.28/28,251.20
  6. Step 6: Final answer
    x = 25,769.40

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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.