Home / 12,391.94-18,589.12-4,071.62

Finding the Fourth Proportional to 12,391.94, 18,589.12 and 4,071.62

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Solution

The fourth proportional to 12,391.94, 18,589.12 and 4,071.62 is: 6,107.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.94 : 18,589.12 = 4,071.62 : x
  2. Step 2: Convert to fraction form
    12,391.94/18,589.12 = 4,071.62/x
  3. Step 3: Cross multiply
    12,391.94x = 18,589.12 × 4,071.62
  4. Step 4: Simplify right side
    12,391.94x = 75,687,832.77
  5. Step 5: Solve for x
    x = 75,687,832.77/12,391.94
  6. Step 6: Final answer
    x = 6,107.83

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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.