Home / 20,110.14-30,161.76-5,320.54

Finding the Fourth Proportional to 20,110.14, 30,161.76 and 5,320.54

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Solution

The fourth proportional to 20,110.14, 30,161.76 and 5,320.54 is: 7,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.14 : 30,161.76 = 5,320.54 : x
  2. Step 2: Convert to fraction form
    20,110.14/30,161.76 = 5,320.54/x
  3. Step 3: Cross multiply
    20,110.14x = 30,161.76 × 5,320.54
  4. Step 4: Simplify right side
    20,110.14x = 160,476,850.55
  5. Step 5: Solve for x
    x = 160,476,850.55/20,110.14
  6. Step 6: Final answer
    x = 7,979.90

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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.