Home / 16,879.86-25,281.72-8,121.33

Finding the Fourth Proportional to 16,879.86, 25,281.72 and 8,121.33

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Solution

The fourth proportional to 16,879.86, 25,281.72 and 8,121.33 is: 12,163.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,879.86 : 25,281.72 = 8,121.33 : x
  2. Step 2: Convert to fraction form
    16,879.86/25,281.72 = 8,121.33/x
  3. Step 3: Cross multiply
    16,879.86x = 25,281.72 × 8,121.33
  4. Step 4: Simplify right side
    16,879.86x = 205,321,191.09
  5. Step 5: Solve for x
    x = 205,321,191.09/16,879.86
  6. Step 6: Final answer
    x = 12,163.68

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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.