Home / 13,826.41-20,739.69-3,438.16

Finding the Fourth Proportional to 13,826.41, 20,739.69 and 3,438.16

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Solution

The fourth proportional to 13,826.41, 20,739.69 and 3,438.16 is: 5,157.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.41 : 20,739.69 = 3,438.16 : x
  2. Step 2: Convert to fraction form
    13,826.41/20,739.69 = 3,438.16/x
  3. Step 3: Cross multiply
    13,826.41x = 20,739.69 × 3,438.16
  4. Step 4: Simplify right side
    13,826.41x = 71,306,268.87
  5. Step 5: Solve for x
    x = 71,306,268.87/13,826.41
  6. Step 6: Final answer
    x = 5,157.25

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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.