Home / 13,391.24-20,099.30-6,822.36

Finding the Fourth Proportional to 13,391.24, 20,099.30 and 6,822.36

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Solution

The fourth proportional to 13,391.24, 20,099.30 and 6,822.36 is: 10,239.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.24 : 20,099.30 = 6,822.36 : x
  2. Step 2: Convert to fraction form
    13,391.24/20,099.30 = 6,822.36/x
  3. Step 3: Cross multiply
    13,391.24x = 20,099.30 × 6,822.36
  4. Step 4: Simplify right side
    13,391.24x = 137,124,626.24
  5. Step 5: Solve for x
    x = 137,124,626.24/13,391.24
  6. Step 6: Final answer
    x = 10,239.88

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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.