Home / 20,619.82-30,940.94-8,933.95

Finding the Fourth Proportional to 20,619.82, 30,940.94 and 8,933.95

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Solution

The fourth proportional to 20,619.82, 30,940.94 and 8,933.95 is: 13,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.82 : 30,940.94 = 8,933.95 : x
  2. Step 2: Convert to fraction form
    20,619.82/30,940.94 = 8,933.95/x
  3. Step 3: Cross multiply
    20,619.82x = 30,940.94 × 8,933.95
  4. Step 4: Simplify right side
    20,619.82x = 276,424,766.24
  5. Step 5: Solve for x
    x = 276,424,766.24/20,619.82
  6. Step 6: Final answer
    x = 13,405.78

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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.