Home / 13,163.72-19,745.29-4,279.33

Finding the Fourth Proportional to 13,163.72, 19,745.29 and 4,279.33

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Solution

The fourth proportional to 13,163.72, 19,745.29 and 4,279.33 is: 6,418.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.72 : 19,745.29 = 4,279.33 : x
  2. Step 2: Convert to fraction form
    13,163.72/19,745.29 = 4,279.33/x
  3. Step 3: Cross multiply
    13,163.72x = 19,745.29 × 4,279.33
  4. Step 4: Simplify right side
    13,163.72x = 84,496,617.82
  5. Step 5: Solve for x
    x = 84,496,617.82/13,163.72
  6. Step 6: Final answer
    x = 6,418.90

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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.