Home / 18,778.82-28,163.37-5,627.66

Finding the Fourth Proportional to 18,778.82, 28,163.37 and 5,627.66

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Solution

The fourth proportional to 18,778.82, 28,163.37 and 5,627.66 is: 8,440.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.82 : 28,163.37 = 5,627.66 : x
  2. Step 2: Convert to fraction form
    18,778.82/28,163.37 = 5,627.66/x
  3. Step 3: Cross multiply
    18,778.82x = 28,163.37 × 5,627.66
  4. Step 4: Simplify right side
    18,778.82x = 158,493,870.81
  5. Step 5: Solve for x
    x = 158,493,870.81/18,778.82
  6. Step 6: Final answer
    x = 8,440.03

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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.