Home / 20,709.88-31,057.26-7,558.36

Finding the Fourth Proportional to 20,709.88, 31,057.26 and 7,558.36

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Solution

The fourth proportional to 20,709.88, 31,057.26 and 7,558.36 is: 11,334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.88 : 31,057.26 = 7,558.36 : x
  2. Step 2: Convert to fraction form
    20,709.88/31,057.26 = 7,558.36/x
  3. Step 3: Cross multiply
    20,709.88x = 31,057.26 × 7,558.36
  4. Step 4: Simplify right side
    20,709.88x = 234,741,951.69
  5. Step 5: Solve for x
    x = 234,741,951.69/20,709.88
  6. Step 6: Final answer
    x = 11,334.78

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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.