Home / 13,745.82-20,618.78-3,357.57

Finding the Fourth Proportional to 13,745.82, 20,618.78 and 3,357.57

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Solution

The fourth proportional to 13,745.82, 20,618.78 and 3,357.57 is: 5,036.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.82 : 20,618.78 = 3,357.57 : x
  2. Step 2: Convert to fraction form
    13,745.82/20,618.78 = 3,357.57/x
  3. Step 3: Cross multiply
    13,745.82x = 20,618.78 × 3,357.57
  4. Step 4: Simplify right side
    13,745.82x = 69,228,997.16
  5. Step 5: Solve for x
    x = 69,228,997.16/13,745.82
  6. Step 6: Final answer
    x = 5,036.37

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1.5x scale

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.