Home / 13,231.31-19,843.85-3,869.36

Finding the Fourth Proportional to 13,231.31, 19,843.85 and 3,869.36

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Solution

The fourth proportional to 13,231.31, 19,843.85 and 3,869.36 is: 5,803.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231.31 : 19,843.85 = 3,869.36 : x
  2. Step 2: Convert to fraction form
    13,231.31/19,843.85 = 3,869.36/x
  3. Step 3: Cross multiply
    13,231.31x = 19,843.85 × 3,869.36
  4. Step 4: Simplify right side
    13,231.31x = 76,782,880.87
  5. Step 5: Solve for x
    x = 76,782,880.87/13,231.31
  6. Step 6: Final answer
    x = 5,803.12

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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.