Home / 20,550.62-30,790.57-13,872.41

Finding the Fourth Proportional to 20,550.62, 30,790.57 and 13,872.41

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Solution

The fourth proportional to 20,550.62, 30,790.57 and 13,872.41 is: 20,784.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.62 : 30,790.57 = 13,872.41 : x
  2. Step 2: Convert to fraction form
    20,550.62/30,790.57 = 13,872.41/x
  3. Step 3: Cross multiply
    20,550.62x = 30,790.57 × 13,872.41
  4. Step 4: Simplify right side
    20,550.62x = 427,139,517.70
  5. Step 5: Solve for x
    x = 427,139,517.70/20,550.62
  6. Step 6: Final answer
    x = 20,784.75

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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.