Home / 30,150.42-41,608.62-18,211.38

Finding the Fourth Proportional to 30,150.42, 41,608.62 and 18,211.38

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Solution

The fourth proportional to 30,150.42, 41,608.62 and 18,211.38 is: 25,132.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,150.42 : 41,608.62 = 18,211.38 : x
  2. Step 2: Convert to fraction form
    30,150.42/41,608.62 = 18,211.38/x
  3. Step 3: Cross multiply
    30,150.42x = 41,608.62 × 18,211.38
  4. Step 4: Simplify right side
    30,150.42x = 757,750,390.10
  5. Step 5: Solve for x
    x = 757,750,390.10/30,150.42
  6. Step 6: Final answer
    x = 25,132.33

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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.