Home / 13,405.36-20,105.31-4,519.66

Finding the Fourth Proportional to 13,405.36, 20,105.31 and 4,519.66

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Solution

The fourth proportional to 13,405.36, 20,105.31 and 4,519.66 is: 6,778.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.36 : 20,105.31 = 4,519.66 : x
  2. Step 2: Convert to fraction form
    13,405.36/20,105.31 = 4,519.66/x
  3. Step 3: Cross multiply
    13,405.36x = 20,105.31 × 4,519.66
  4. Step 4: Simplify right side
    13,405.36x = 90,869,165.39
  5. Step 5: Solve for x
    x = 90,869,165.39/13,405.36
  6. Step 6: Final answer
    x = 6,778.57

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.