Home / 11,121.76-16,682.32-2,801.76

Finding the Fourth Proportional to 11,121.76, 16,682.32 and 2,801.76

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Solution

The fourth proportional to 11,121.76, 16,682.32 and 2,801.76 is: 4,202.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.76 : 16,682.32 = 2,801.76 : x
  2. Step 2: Convert to fraction form
    11,121.76/16,682.32 = 2,801.76/x
  3. Step 3: Cross multiply
    11,121.76x = 16,682.32 × 2,801.76
  4. Step 4: Simplify right side
    11,121.76x = 46,739,856.88
  5. Step 5: Solve for x
    x = 46,739,856.88/11,121.76
  6. Step 6: Final answer
    x = 4,202.56

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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.