Home / 13,782.82-20,674.24-3,394.57

Finding the Fourth Proportional to 13,782.82, 20,674.24 and 3,394.57

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Solution

The fourth proportional to 13,782.82, 20,674.24 and 3,394.57 is: 5,091.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.82 : 20,674.24 = 3,394.57 : x
  2. Step 2: Convert to fraction form
    13,782.82/20,674.24 = 3,394.57/x
  3. Step 3: Cross multiply
    13,782.82x = 20,674.24 × 3,394.57
  4. Step 4: Simplify right side
    13,782.82x = 70,180,137.90
  5. Step 5: Solve for x
    x = 70,180,137.90/13,782.82
  6. Step 6: Final answer
    x = 5,091.86

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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.