Home / 20,591.82-30,942.36-11,238.66

Finding the Fourth Proportional to 20,591.82, 30,942.36 and 11,238.66

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Solution

The fourth proportional to 20,591.82, 30,942.36 and 11,238.66 is: 16,887.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.82 : 30,942.36 = 11,238.66 : x
  2. Step 2: Convert to fraction form
    20,591.82/30,942.36 = 11,238.66/x
  3. Step 3: Cross multiply
    20,591.82x = 30,942.36 × 11,238.66
  4. Step 4: Simplify right side
    20,591.82x = 347,750,663.64
  5. Step 5: Solve for x
    x = 347,750,663.64/20,591.82
  6. Step 6: Final answer
    x = 16,887.81

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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.