Home / 13,998.90-20,993.46-4,135.56

Finding the Fourth Proportional to 13,998.90, 20,993.46 and 4,135.56

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Solution

The fourth proportional to 13,998.90, 20,993.46 and 4,135.56 is: 6,201.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.90 : 20,993.46 = 4,135.56 : x
  2. Step 2: Convert to fraction form
    13,998.90/20,993.46 = 4,135.56/x
  3. Step 3: Cross multiply
    13,998.90x = 20,993.46 × 4,135.56
  4. Step 4: Simplify right side
    13,998.90x = 86,819,713.44
  5. Step 5: Solve for x
    x = 86,819,713.44/13,998.90
  6. Step 6: Final answer
    x = 6,201.90

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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.