Home / 13,811.36-20,712.48-5,493.44

Finding the Fourth Proportional to 13,811.36, 20,712.48 and 5,493.44

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Solution

The fourth proportional to 13,811.36, 20,712.48 and 5,493.44 is: 8,238.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.36 : 20,712.48 = 5,493.44 : x
  2. Step 2: Convert to fraction form
    13,811.36/20,712.48 = 5,493.44/x
  3. Step 3: Cross multiply
    13,811.36x = 20,712.48 × 5,493.44
  4. Step 4: Simplify right side
    13,811.36x = 113,782,766.13
  5. Step 5: Solve for x
    x = 113,782,766.13/13,811.36
  6. Step 6: Final answer
    x = 8,238.35

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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.