Home / 13,828.78-20,735.88-5,508.46

Finding the Fourth Proportional to 13,828.78, 20,735.88 and 5,508.46

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Solution

The fourth proportional to 13,828.78, 20,735.88 and 5,508.46 is: 8,259.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.78 : 20,735.88 = 5,508.46 : x
  2. Step 2: Convert to fraction form
    13,828.78/20,735.88 = 5,508.46/x
  3. Step 3: Cross multiply
    13,828.78x = 20,735.88 × 5,508.46
  4. Step 4: Simplify right side
    13,828.78x = 114,222,765.54
  5. Step 5: Solve for x
    x = 114,222,765.54/13,828.78
  6. Step 6: Final answer
    x = 8,259.79

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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.