Home / 11,085.20-16,633.20-8,451.80

Finding the Fourth Proportional to 11,085.20, 16,633.20 and 8,451.80

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Solution

The fourth proportional to 11,085.20, 16,633.20 and 8,451.80 is: 12,681.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,085.20 : 16,633.20 = 8,451.80 : x
  2. Step 2: Convert to fraction form
    11,085.20/16,633.20 = 8,451.80/x
  3. Step 3: Cross multiply
    11,085.20x = 16,633.20 × 8,451.80
  4. Step 4: Simplify right side
    11,085.20x = 140,580,479.76
  5. Step 5: Solve for x
    x = 140,580,479.76/11,085.20
  6. Step 6: Final answer
    x = 12,681.82

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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.