Home / 13,634.28-20,448.36-5,311.44

Finding the Fourth Proportional to 13,634.28, 20,448.36 and 5,311.44

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Solution

The fourth proportional to 13,634.28, 20,448.36 and 5,311.44 is: 7,965.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.28 : 20,448.36 = 5,311.44 : x
  2. Step 2: Convert to fraction form
    13,634.28/20,448.36 = 5,311.44/x
  3. Step 3: Cross multiply
    13,634.28x = 20,448.36 × 5,311.44
  4. Step 4: Simplify right side
    13,634.28x = 108,610,237.24
  5. Step 5: Solve for x
    x = 108,610,237.24/13,634.28
  6. Step 6: Final answer
    x = 7,965.97

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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.