Home / 13,942.55-20,912.29-4,081.92

Finding the Fourth Proportional to 13,942.55, 20,912.29 and 4,081.92

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Solution

The fourth proportional to 13,942.55, 20,912.29 and 4,081.92 is: 6,122.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.55 : 20,912.29 = 4,081.92 : x
  2. Step 2: Convert to fraction form
    13,942.55/20,912.29 = 4,081.92/x
  3. Step 3: Cross multiply
    13,942.55x = 20,912.29 × 4,081.92
  4. Step 4: Simplify right side
    13,942.55x = 85,362,383.42
  5. Step 5: Solve for x
    x = 85,362,383.42/13,942.55
  6. Step 6: Final answer
    x = 6,122.44

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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.