Home / 13,826.28-20,739.42-3,438.04

Finding the Fourth Proportional to 13,826.28, 20,739.42 and 3,438.04

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Solution

The fourth proportional to 13,826.28, 20,739.42 and 3,438.04 is: 5,157.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.28 : 20,739.42 = 3,438.04 : x
  2. Step 2: Convert to fraction form
    13,826.28/20,739.42 = 3,438.04/x
  3. Step 3: Cross multiply
    13,826.28x = 20,739.42 × 3,438.04
  4. Step 4: Simplify right side
    13,826.28x = 71,302,955.54
  5. Step 5: Solve for x
    x = 71,302,955.54/13,826.28
  6. Step 6: Final answer
    x = 5,157.06

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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.