Home / 30,369.09-41,891.79-18,261.15

Finding the Fourth Proportional to 30,369.09, 41,891.79 and 18,261.15

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Solution

The fourth proportional to 30,369.09, 41,891.79 and 18,261.15 is: 25,189.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,369.09 : 41,891.79 = 18,261.15 : x
  2. Step 2: Convert to fraction form
    30,369.09/41,891.79 = 18,261.15/x
  3. Step 3: Cross multiply
    30,369.09x = 41,891.79 × 18,261.15
  4. Step 4: Simplify right side
    30,369.09x = 764,992,260.96
  5. Step 5: Solve for x
    x = 764,992,260.96/30,369.09
  6. Step 6: Final answer
    x = 25,189.83

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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.