Home / 13,223.75-19,836.44-3,989.75

Finding the Fourth Proportional to 13,223.75, 19,836.44 and 3,989.75

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Solution

The fourth proportional to 13,223.75, 19,836.44 and 3,989.75 is: 5,984.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,223.75 : 19,836.44 = 3,989.75 : x
  2. Step 2: Convert to fraction form
    13,223.75/19,836.44 = 3,989.75/x
  3. Step 3: Cross multiply
    13,223.75x = 19,836.44 × 3,989.75
  4. Step 4: Simplify right side
    13,223.75x = 79,142,416.54
  5. Step 5: Solve for x
    x = 79,142,416.54/13,223.75
  6. Step 6: Final answer
    x = 5,984.87

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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.