Home / 13,830.03-20,745.12-3,441.78

Finding the Fourth Proportional to 13,830.03, 20,745.12 and 3,441.78

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Solution

The fourth proportional to 13,830.03, 20,745.12 and 3,441.78 is: 5,162.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.03 : 20,745.12 = 3,441.78 : x
  2. Step 2: Convert to fraction form
    13,830.03/20,745.12 = 3,441.78/x
  3. Step 3: Cross multiply
    13,830.03x = 20,745.12 × 3,441.78
  4. Step 4: Simplify right side
    13,830.03x = 71,400,139.11
  5. Step 5: Solve for x
    x = 71,400,139.11/13,830.03
  6. Step 6: Final answer
    x = 5,162.69

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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.