Home / 18,102.15-27,147.90-5,451.39

Finding the Fourth Proportional to 18,102.15, 27,147.90 and 5,451.39

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Solution

The fourth proportional to 18,102.15, 27,147.90 and 5,451.39 is: 8,175.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,102.15 : 27,147.90 = 5,451.39 : x
  2. Step 2: Convert to fraction form
    18,102.15/27,147.90 = 5,451.39/x
  3. Step 3: Cross multiply
    18,102.15x = 27,147.90 × 5,451.39
  4. Step 4: Simplify right side
    18,102.15x = 147,993,790.58
  5. Step 5: Solve for x
    x = 147,993,790.58/18,102.15
  6. Step 6: Final answer
    x = 8,175.48

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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.