Home / 11,913.60-17,863.92-4,121.76

Finding the Fourth Proportional to 11,913.60, 17,863.92 and 4,121.76

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Solution

The fourth proportional to 11,913.60, 17,863.92 and 4,121.76 is: 6,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,913.60 : 17,863.92 = 4,121.76 : x
  2. Step 2: Convert to fraction form
    11,913.60/17,863.92 = 4,121.76/x
  3. Step 3: Cross multiply
    11,913.60x = 17,863.92 × 4,121.76
  4. Step 4: Simplify right side
    11,913.60x = 73,630,790.90
  5. Step 5: Solve for x
    x = 73,630,790.90/11,913.60
  6. Step 6: Final answer
    x = 6,180.40

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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.