Home / 28,279.20-42,451.20-17,198.40

Finding the Fourth Proportional to 28,279.20, 42,451.20 and 17,198.40

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Solution

The fourth proportional to 28,279.20, 42,451.20 and 17,198.40 is: 25,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.20 : 42,451.20 = 17,198.40 : x
  2. Step 2: Convert to fraction form
    28,279.20/42,451.20 = 17,198.40/x
  3. Step 3: Cross multiply
    28,279.20x = 42,451.20 × 17,198.40
  4. Step 4: Simplify right side
    28,279.20x = 730,092,718.08
  5. Step 5: Solve for x
    x = 730,092,718.08/28,279.20
  6. Step 6: Final answer
    x = 25,817.30

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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.