Home / 13,912.81-20,872.79-5,029.04

Finding the Fourth Proportional to 13,912.81, 20,872.79 and 5,029.04

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Solution

The fourth proportional to 13,912.81, 20,872.79 and 5,029.04 is: 7,544.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.81 : 20,872.79 = 5,029.04 : x
  2. Step 2: Convert to fraction form
    13,912.81/20,872.79 = 5,029.04/x
  3. Step 3: Cross multiply
    13,912.81x = 20,872.79 × 5,029.04
  4. Step 4: Simplify right side
    13,912.81x = 104,970,024.31
  5. Step 5: Solve for x
    x = 104,970,024.31/13,912.81
  6. Step 6: Final answer
    x = 7,544.85

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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.