Home / 12,148.11-18,223.92-3,828.87

Finding the Fourth Proportional to 12,148.11, 18,223.92 and 3,828.87

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Solution

The fourth proportional to 12,148.11, 18,223.92 and 3,828.87 is: 5,743.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.11 : 18,223.92 = 3,828.87 : x
  2. Step 2: Convert to fraction form
    12,148.11/18,223.92 = 3,828.87/x
  3. Step 3: Cross multiply
    12,148.11x = 18,223.92 × 3,828.87
  4. Step 4: Simplify right side
    12,148.11x = 69,777,020.57
  5. Step 5: Solve for x
    x = 69,777,020.57/12,148.11
  6. Step 6: Final answer
    x = 5,743.86

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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.