Home / 13,424.75-20,121.92-6,837.02

Finding the Fourth Proportional to 13,424.75, 20,121.92 and 6,837.02

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Solution

The fourth proportional to 13,424.75, 20,121.92 and 6,837.02 is: 10,247.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.75 : 20,121.92 = 6,837.02 : x
  2. Step 2: Convert to fraction form
    13,424.75/20,121.92 = 6,837.02/x
  3. Step 3: Cross multiply
    13,424.75x = 20,121.92 × 6,837.02
  4. Step 4: Simplify right side
    13,424.75x = 137,573,969.48
  5. Step 5: Solve for x
    x = 137,573,969.48/13,424.75
  6. Step 6: Final answer
    x = 10,247.79

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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.