Home / 13,826.50-20,739.83-3,438.25

Finding the Fourth Proportional to 13,826.50, 20,739.83 and 3,438.25

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Solution

The fourth proportional to 13,826.50, 20,739.83 and 3,438.25 is: 5,157.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.50 : 20,739.83 = 3,438.25 : x
  2. Step 2: Convert to fraction form
    13,826.50/20,739.83 = 3,438.25/x
  3. Step 3: Cross multiply
    13,826.50x = 20,739.83 × 3,438.25
  4. Step 4: Simplify right side
    13,826.50x = 71,308,720.50
  5. Step 5: Solve for x
    x = 71,308,720.50/13,826.50
  6. Step 6: Final answer
    x = 5,157.39

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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.