Home / 13,689.44-20,533.94-3,828.57

Finding the Fourth Proportional to 13,689.44, 20,533.94 and 3,828.57

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Solution

The fourth proportional to 13,689.44, 20,533.94 and 3,828.57 is: 5,742.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.44 : 20,533.94 = 3,828.57 : x
  2. Step 2: Convert to fraction form
    13,689.44/20,533.94 = 3,828.57/x
  3. Step 3: Cross multiply
    13,689.44x = 20,533.94 × 3,828.57
  4. Step 4: Simplify right side
    13,689.44x = 78,615,544.88
  5. Step 5: Solve for x
    x = 78,615,544.88/13,689.44
  6. Step 6: Final answer
    x = 5,742.79

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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.