Home / 13,163.67-18,164.11-8,454.33

Finding the Fourth Proportional to 13,163.67, 18,164.11 and 8,454.33

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Solution

The fourth proportional to 13,163.67, 18,164.11 and 8,454.33 is: 11,665.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.67 : 18,164.11 = 8,454.33 : x
  2. Step 2: Convert to fraction form
    13,163.67/18,164.11 = 8,454.33/x
  3. Step 3: Cross multiply
    13,163.67x = 18,164.11 × 8,454.33
  4. Step 4: Simplify right side
    13,163.67x = 153,565,380.10
  5. Step 5: Solve for x
    x = 153,565,380.10/13,163.67
  6. Step 6: Final answer
    x = 11,665.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.