Home / 12,107.03-18,162.61-3,785.42

Finding the Fourth Proportional to 12,107.03, 18,162.61 and 3,785.42

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Solution

The fourth proportional to 12,107.03, 18,162.61 and 3,785.42 is: 5,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.03 : 18,162.61 = 3,785.42 : x
  2. Step 2: Convert to fraction form
    12,107.03/18,162.61 = 3,785.42/x
  3. Step 3: Cross multiply
    12,107.03x = 18,162.61 × 3,785.42
  4. Step 4: Simplify right side
    12,107.03x = 68,753,107.15
  5. Step 5: Solve for x
    x = 68,753,107.15/12,107.03
  6. Step 6: Final answer
    x = 5,678.78

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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.