Home / 13,918.45-20,877.37-3,388.52

Finding the Fourth Proportional to 13,918.45, 20,877.37 and 3,388.52

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Solution

The fourth proportional to 13,918.45, 20,877.37 and 3,388.52 is: 5,082.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.45 : 20,877.37 = 3,388.52 : x
  2. Step 2: Convert to fraction form
    13,918.45/20,877.37 = 3,388.52/x
  3. Step 3: Cross multiply
    13,918.45x = 20,877.37 × 3,388.52
  4. Step 4: Simplify right side
    13,918.45x = 70,743,385.79
  5. Step 5: Solve for x
    x = 70,743,385.79/13,918.45
  6. Step 6: Final answer
    x = 5,082.71

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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.