Home / 13,671.20-20,511.35-4,906.80

Finding the Fourth Proportional to 13,671.20, 20,511.35 and 4,906.80

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Solution

The fourth proportional to 13,671.20, 20,511.35 and 4,906.80 is: 7,361.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.20 : 20,511.35 = 4,906.80 : x
  2. Step 2: Convert to fraction form
    13,671.20/20,511.35 = 4,906.80/x
  3. Step 3: Cross multiply
    13,671.20x = 20,511.35 × 4,906.80
  4. Step 4: Simplify right side
    13,671.20x = 100,645,067.65
  5. Step 5: Solve for x
    x = 100,645,067.65/13,671.20
  6. Step 6: Final answer
    x = 7,361.83

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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.