Home / 20,138.73-30,204.64-5,349.14

Finding the Fourth Proportional to 20,138.73, 30,204.64 and 5,349.14

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Solution

The fourth proportional to 20,138.73, 30,204.64 and 5,349.14 is: 8,022.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138.73 : 30,204.64 = 5,349.14 : x
  2. Step 2: Convert to fraction form
    20,138.73/30,204.64 = 5,349.14/x
  3. Step 3: Cross multiply
    20,138.73x = 30,204.64 × 5,349.14
  4. Step 4: Simplify right side
    20,138.73x = 161,568,848.01
  5. Step 5: Solve for x
    x = 161,568,848.01/20,138.73
  6. Step 6: Final answer
    x = 8,022.79

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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.