Home / 20,391.13-30,588.52-7,910.85

Finding the Fourth Proportional to 20,391.13, 30,588.52 and 7,910.85

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Solution

The fourth proportional to 20,391.13, 30,588.52 and 7,910.85 is: 11,866.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.13 : 30,588.52 = 7,910.85 : x
  2. Step 2: Convert to fraction form
    20,391.13/30,588.52 = 7,910.85/x
  3. Step 3: Cross multiply
    20,391.13x = 30,588.52 × 7,910.85
  4. Step 4: Simplify right side
    20,391.13x = 241,981,193.44
  5. Step 5: Solve for x
    x = 241,981,193.44/20,391.13
  6. Step 6: Final answer
    x = 11,866.98

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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.