Home / 18,427.20-27,640.78-4,576.20

Finding the Fourth Proportional to 18,427.20, 27,640.78 and 4,576.20

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Solution

The fourth proportional to 18,427.20, 27,640.78 and 4,576.20 is: 6,864.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.20 : 27,640.78 = 4,576.20 : x
  2. Step 2: Convert to fraction form
    18,427.20/27,640.78 = 4,576.20/x
  3. Step 3: Cross multiply
    18,427.20x = 27,640.78 × 4,576.20
  4. Step 4: Simplify right side
    18,427.20x = 126,489,737.44
  5. Step 5: Solve for x
    x = 126,489,737.44/18,427.20
  6. Step 6: Final answer
    x = 6,864.30

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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.