Home / 13,826.05-20,739.16-3,437.80

Finding the Fourth Proportional to 13,826.05, 20,739.16 and 3,437.80

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Solution

The fourth proportional to 13,826.05, 20,739.16 and 3,437.80 is: 5,156.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.05 : 20,739.16 = 3,437.80 : x
  2. Step 2: Convert to fraction form
    13,826.05/20,739.16 = 3,437.80/x
  3. Step 3: Cross multiply
    13,826.05x = 20,739.16 × 3,437.80
  4. Step 4: Simplify right side
    13,826.05x = 71,297,084.25
  5. Step 5: Solve for x
    x = 71,297,084.25/13,826.05
  6. Step 6: Final answer
    x = 5,156.72

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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.