Home / 13,717.31-20,576.79-3,857.36

Finding the Fourth Proportional to 13,717.31, 20,576.79 and 3,857.36

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Solution

The fourth proportional to 13,717.31, 20,576.79 and 3,857.36 is: 5,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,717.31 : 20,576.79 = 3,857.36 : x
  2. Step 2: Convert to fraction form
    13,717.31/20,576.79 = 3,857.36/x
  3. Step 3: Cross multiply
    13,717.31x = 20,576.79 × 3,857.36
  4. Step 4: Simplify right side
    13,717.31x = 79,372,086.67
  5. Step 5: Solve for x
    x = 79,372,086.67/13,717.31
  6. Step 6: Final answer
    x = 5,786.27

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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.