Home / 13,826.31-20,739.48-3,438.06

Finding the Fourth Proportional to 13,826.31, 20,739.48 and 3,438.06

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Solution

The fourth proportional to 13,826.31, 20,739.48 and 3,438.06 is: 5,157.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.31 : 20,739.48 = 3,438.06 : x
  2. Step 2: Convert to fraction form
    13,826.31/20,739.48 = 3,438.06/x
  3. Step 3: Cross multiply
    13,826.31x = 20,739.48 × 3,438.06
  4. Step 4: Simplify right side
    13,826.31x = 71,303,576.61
  5. Step 5: Solve for x
    x = 71,303,576.61/13,826.31
  6. Step 6: Final answer
    x = 5,157.09

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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.