Home / 20,976.09-31,468.50-6,183.78

Finding the Fourth Proportional to 20,976.09, 31,468.50 and 6,183.78

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Solution

The fourth proportional to 20,976.09, 31,468.50 and 6,183.78 is: 9,276.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.09 : 31,468.50 = 6,183.78 : x
  2. Step 2: Convert to fraction form
    20,976.09/31,468.50 = 6,183.78/x
  3. Step 3: Cross multiply
    20,976.09x = 31,468.50 × 6,183.78
  4. Step 4: Simplify right side
    20,976.09x = 194,594,280.93
  5. Step 5: Solve for x
    x = 194,594,280.93/20,976.09
  6. Step 6: Final answer
    x = 9,276.96

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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.