Home / 20,852.78-31,278.91-5,057.94

Finding the Fourth Proportional to 20,852.78, 31,278.91 and 5,057.94

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Solution

The fourth proportional to 20,852.78, 31,278.91 and 5,057.94 is: 7,586.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.78 : 31,278.91 = 5,057.94 : x
  2. Step 2: Convert to fraction form
    20,852.78/31,278.91 = 5,057.94/x
  3. Step 3: Cross multiply
    20,852.78x = 31,278.91 × 5,057.94
  4. Step 4: Simplify right side
    20,852.78x = 158,206,850.05
  5. Step 5: Solve for x
    x = 158,206,850.05/20,852.78
  6. Step 6: Final answer
    x = 7,586.85

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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.