Home / 12,631.35-18,947.94-3,865.13

Finding the Fourth Proportional to 12,631.35, 18,947.94 and 3,865.13

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Solution

The fourth proportional to 12,631.35, 18,947.94 and 3,865.13 is: 5,797.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.35 : 18,947.94 = 3,865.13 : x
  2. Step 2: Convert to fraction form
    12,631.35/18,947.94 = 3,865.13/x
  3. Step 3: Cross multiply
    12,631.35x = 18,947.94 × 3,865.13
  4. Step 4: Simplify right side
    12,631.35x = 73,236,251.33
  5. Step 5: Solve for x
    x = 73,236,251.33/12,631.35
  6. Step 6: Final answer
    x = 5,797.97

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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.