Home / 13,351.05-20,025.84-3,991.15

Finding the Fourth Proportional to 13,351.05, 20,025.84 and 3,991.15

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Solution

The fourth proportional to 13,351.05, 20,025.84 and 3,991.15 is: 5,986.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.05 : 20,025.84 = 3,991.15 : x
  2. Step 2: Convert to fraction form
    13,351.05/20,025.84 = 3,991.15/x
  3. Step 3: Cross multiply
    13,351.05x = 20,025.84 × 3,991.15
  4. Step 4: Simplify right side
    13,351.05x = 79,926,131.32
  5. Step 5: Solve for x
    x = 79,926,131.32/13,351.05
  6. Step 6: Final answer
    x = 5,986.51

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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.