Home / 11,919.92-17,880.74-3,154.73

Finding the Fourth Proportional to 11,919.92, 17,880.74 and 3,154.73

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Solution

The fourth proportional to 11,919.92, 17,880.74 and 3,154.73 is: 4,732.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.92 : 17,880.74 = 3,154.73 : x
  2. Step 2: Convert to fraction form
    11,919.92/17,880.74 = 3,154.73/x
  3. Step 3: Cross multiply
    11,919.92x = 17,880.74 × 3,154.73
  4. Step 4: Simplify right side
    11,919.92x = 56,408,959.49
  5. Step 5: Solve for x
    x = 56,408,959.49/11,919.92
  6. Step 6: Final answer
    x = 4,732.33

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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.