Home / 13,803.36-20,703.60-3,942

Finding the Fourth Proportional to 13,803.36, 20,703.60 and 3,942

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Solution

The fourth proportional to 13,803.36, 20,703.60 and 3,942 is: 5,912.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.36 : 20,703.60 = 3,942 : x
  2. Step 2: Convert to fraction form
    13,803.36/20,703.60 = 3,942/x
  3. Step 3: Cross multiply
    13,803.36x = 20,703.60 × 3,942
  4. Step 4: Simplify right side
    13,803.36x = 81,613,591.20
  5. Step 5: Solve for x
    x = 81,613,591.20/13,803.36
  6. Step 6: Final answer
    x = 5,912.59

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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.