Home / 28,768.82-43,134.99-12,140.33

Finding the Fourth Proportional to 28,768.82, 43,134.99 and 12,140.33

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Solution

The fourth proportional to 28,768.82, 43,134.99 and 12,140.33 is: 18,202.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,768.82 : 43,134.99 = 12,140.33 : x
  2. Step 2: Convert to fraction form
    28,768.82/43,134.99 = 12,140.33/x
  3. Step 3: Cross multiply
    28,768.82x = 43,134.99 × 12,140.33
  4. Step 4: Simplify right side
    28,768.82x = 523,672,797.47
  5. Step 5: Solve for x
    x = 523,672,797.47/28,768.82
  6. Step 6: Final answer
    x = 18,202.79

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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.