Home / 13,355.75-20,033.90-4,121.75

Finding the Fourth Proportional to 13,355.75, 20,033.90 and 4,121.75

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Solution

The fourth proportional to 13,355.75, 20,033.90 and 4,121.75 is: 6,182.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.75 : 20,033.90 = 4,121.75 : x
  2. Step 2: Convert to fraction form
    13,355.75/20,033.90 = 4,121.75/x
  3. Step 3: Cross multiply
    13,355.75x = 20,033.90 × 4,121.75
  4. Step 4: Simplify right side
    13,355.75x = 82,574,727.33
  5. Step 5: Solve for x
    x = 82,574,727.33/13,355.75
  6. Step 6: Final answer
    x = 6,182.71

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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.