Home / 12,183.40-18,276.81-4,286.96

Finding the Fourth Proportional to 12,183.40, 18,276.81 and 4,286.96

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Solution

The fourth proportional to 12,183.40, 18,276.81 and 4,286.96 is: 6,431.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.40 : 18,276.81 = 4,286.96 : x
  2. Step 2: Convert to fraction form
    12,183.40/18,276.81 = 4,286.96/x
  3. Step 3: Cross multiply
    12,183.40x = 18,276.81 × 4,286.96
  4. Step 4: Simplify right side
    12,183.40x = 78,351,914.48
  5. Step 5: Solve for x
    x = 78,351,914.48/12,183.40
  6. Step 6: Final answer
    x = 6,431.04

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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.