Home / 11,079.20-16,624.20-8,445.80

Finding the Fourth Proportional to 11,079.20, 16,624.20 and 8,445.80

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Solution

The fourth proportional to 11,079.20, 16,624.20 and 8,445.80 is: 12,672.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,079.20 : 16,624.20 = 8,445.80 : x
  2. Step 2: Convert to fraction form
    11,079.20/16,624.20 = 8,445.80/x
  3. Step 3: Cross multiply
    11,079.20x = 16,624.20 × 8,445.80
  4. Step 4: Simplify right side
    11,079.20x = 140,404,668.36
  5. Step 5: Solve for x
    x = 140,404,668.36/11,079.20
  6. Step 6: Final answer
    x = 12,672.82

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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.