Home / 20,811.50-31,221.96-6,021.61

Finding the Fourth Proportional to 20,811.50, 31,221.96 and 6,021.61

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Solution

The fourth proportional to 20,811.50, 31,221.96 and 6,021.61 is: 9,033.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811.50 : 31,221.96 = 6,021.61 : x
  2. Step 2: Convert to fraction form
    20,811.50/31,221.96 = 6,021.61/x
  3. Step 3: Cross multiply
    20,811.50x = 31,221.96 × 6,021.61
  4. Step 4: Simplify right side
    20,811.50x = 188,006,365.92
  5. Step 5: Solve for x
    x = 188,006,365.92/20,811.50
  6. Step 6: Final answer
    x = 9,033.77

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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.