Home / 10,243.20-15,348.60-8,590.80

Finding the Fourth Proportional to 10,243.20, 15,348.60 and 8,590.80

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Solution

The fourth proportional to 10,243.20, 15,348.60 and 8,590.80 is: 12,872.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,243.20 : 15,348.60 = 8,590.80 : x
  2. Step 2: Convert to fraction form
    10,243.20/15,348.60 = 8,590.80/x
  3. Step 3: Cross multiply
    10,243.20x = 15,348.60 × 8,590.80
  4. Step 4: Simplify right side
    10,243.20x = 131,856,752.88
  5. Step 5: Solve for x
    x = 131,856,752.88/10,243.20
  6. Step 6: Final answer
    x = 12,872.61

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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.