Home / 13,383.87-20,028.38-9,865.56

Finding the Fourth Proportional to 13,383.87, 20,028.38 and 9,865.56

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Solution

The fourth proportional to 13,383.87, 20,028.38 and 9,865.56 is: 14,763.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.87 : 20,028.38 = 9,865.56 : x
  2. Step 2: Convert to fraction form
    13,383.87/20,028.38 = 9,865.56/x
  3. Step 3: Cross multiply
    13,383.87x = 20,028.38 × 9,865.56
  4. Step 4: Simplify right side
    13,383.87x = 197,591,135.27
  5. Step 5: Solve for x
    x = 197,591,135.27/13,383.87
  6. Step 6: Final answer
    x = 14,763.38

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1.5x scale

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.