Home / 11,221.82-16,835.20-3,431.24

Finding the Fourth Proportional to 11,221.82, 16,835.20 and 3,431.24

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Solution

The fourth proportional to 11,221.82, 16,835.20 and 3,431.24 is: 5,147.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.82 : 16,835.20 = 3,431.24 : x
  2. Step 2: Convert to fraction form
    11,221.82/16,835.20 = 3,431.24/x
  3. Step 3: Cross multiply
    11,221.82x = 16,835.20 × 3,431.24
  4. Step 4: Simplify right side
    11,221.82x = 57,765,611.65
  5. Step 5: Solve for x
    x = 57,765,611.65/11,221.82
  6. Step 6: Final answer
    x = 5,147.62

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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.