Home / 13,859.55-20,786.79-3,996.39

Finding the Fourth Proportional to 13,859.55, 20,786.79 and 3,996.39

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Solution

The fourth proportional to 13,859.55, 20,786.79 and 3,996.39 is: 5,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.55 : 20,786.79 = 3,996.39 : x
  2. Step 2: Convert to fraction form
    13,859.55/20,786.79 = 3,996.39/x
  3. Step 3: Cross multiply
    13,859.55x = 20,786.79 × 3,996.39
  4. Step 4: Simplify right side
    13,859.55x = 83,072,119.69
  5. Step 5: Solve for x
    x = 83,072,119.69/13,859.55
  6. Step 6: Final answer
    x = 5,993.85

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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.