Home / 10,279.20-15,414.48-4,432.80

Finding the Fourth Proportional to 10,279.20, 15,414.48 and 4,432.80

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Solution

The fourth proportional to 10,279.20, 15,414.48 and 4,432.80 is: 6,647.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.20 : 15,414.48 = 4,432.80 : x
  2. Step 2: Convert to fraction form
    10,279.20/15,414.48 = 4,432.80/x
  3. Step 3: Cross multiply
    10,279.20x = 15,414.48 × 4,432.80
  4. Step 4: Simplify right side
    10,279.20x = 68,329,306.94
  5. Step 5: Solve for x
    x = 68,329,306.94/10,279.20
  6. Step 6: Final answer
    x = 6,647.34

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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.