Home / 13,942.48-20,912.16-4,081.84

Finding the Fourth Proportional to 13,942.48, 20,912.16 and 4,081.84

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Solution

The fourth proportional to 13,942.48, 20,912.16 and 4,081.84 is: 6,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.48 : 20,912.16 = 4,081.84 : x
  2. Step 2: Convert to fraction form
    13,942.48/20,912.16 = 4,081.84/x
  3. Step 3: Cross multiply
    13,942.48x = 20,912.16 × 4,081.84
  4. Step 4: Simplify right side
    13,942.48x = 85,360,091.17
  5. Step 5: Solve for x
    x = 85,360,091.17/13,942.48
  6. Step 6: Final answer
    x = 6,122.30

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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.