Home / 11,245.20-16,872.60-5,398.80

Finding the Fourth Proportional to 11,245.20, 16,872.60 and 5,398.80

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Solution

The fourth proportional to 11,245.20, 16,872.60 and 5,398.80 is: 8,100.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,245.20 : 16,872.60 = 5,398.80 : x
  2. Step 2: Convert to fraction form
    11,245.20/16,872.60 = 5,398.80/x
  3. Step 3: Cross multiply
    11,245.20x = 16,872.60 × 5,398.80
  4. Step 4: Simplify right side
    11,245.20x = 91,091,792.88
  5. Step 5: Solve for x
    x = 91,091,792.88/11,245.20
  6. Step 6: Final answer
    x = 8,100.50

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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.