Home / 20,121.94-30,183.28-6,974.74

Finding the Fourth Proportional to 20,121.94, 30,183.28 and 6,974.74

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Solution

The fourth proportional to 20,121.94, 30,183.28 and 6,974.74 is: 10,462.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.94 : 30,183.28 = 6,974.74 : x
  2. Step 2: Convert to fraction form
    20,121.94/30,183.28 = 6,974.74/x
  3. Step 3: Cross multiply
    20,121.94x = 30,183.28 × 6,974.74
  4. Step 4: Simplify right side
    20,121.94x = 210,520,530.35
  5. Step 5: Solve for x
    x = 210,520,530.35/20,121.94
  6. Step 6: Final answer
    x = 10,462.24

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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.