Home / 28,179.20-42,252.60-8,454.80

Finding the Fourth Proportional to 28,179.20, 42,252.60 and 8,454.80

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Solution

The fourth proportional to 28,179.20, 42,252.60 and 8,454.80 is: 12,677.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.20 : 42,252.60 = 8,454.80 : x
  2. Step 2: Convert to fraction form
    28,179.20/42,252.60 = 8,454.80/x
  3. Step 3: Cross multiply
    28,179.20x = 42,252.60 × 8,454.80
  4. Step 4: Simplify right side
    28,179.20x = 357,237,282.48
  5. Step 5: Solve for x
    x = 357,237,282.48/28,179.20
  6. Step 6: Final answer
    x = 12,677.34

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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.