Home / 11,310.40-16,951.20-8,228.80

Finding the Fourth Proportional to 11,310.40, 16,951.20 and 8,228.80

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Solution

The fourth proportional to 11,310.40, 16,951.20 and 8,228.80 is: 12,332.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.40 : 16,951.20 = 8,228.80 : x
  2. Step 2: Convert to fraction form
    11,310.40/16,951.20 = 8,228.80/x
  3. Step 3: Cross multiply
    11,310.40x = 16,951.20 × 8,228.80
  4. Step 4: Simplify right side
    11,310.40x = 139,488,034.56
  5. Step 5: Solve for x
    x = 139,488,034.56/11,310.40
  6. Step 6: Final answer
    x = 12,332.72

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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.