Home / 12,235.12-18,348.08-3,912.92

Finding the Fourth Proportional to 12,235.12, 18,348.08 and 3,912.92

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Solution

The fourth proportional to 12,235.12, 18,348.08 and 3,912.92 is: 5,867.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.12 : 18,348.08 = 3,912.92 : x
  2. Step 2: Convert to fraction form
    12,235.12/18,348.08 = 3,912.92/x
  3. Step 3: Cross multiply
    12,235.12x = 18,348.08 × 3,912.92
  4. Step 4: Simplify right side
    12,235.12x = 71,794,569.19
  5. Step 5: Solve for x
    x = 71,794,569.19/12,235.12
  6. Step 6: Final answer
    x = 5,867.91

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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.