Home / 13,900.68-20,851.09-3,512.44

Finding the Fourth Proportional to 13,900.68, 20,851.09 and 3,512.44

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Solution

The fourth proportional to 13,900.68, 20,851.09 and 3,512.44 is: 5,268.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.68 : 20,851.09 = 3,512.44 : x
  2. Step 2: Convert to fraction form
    13,900.68/20,851.09 = 3,512.44/x
  3. Step 3: Cross multiply
    13,900.68x = 20,851.09 × 3,512.44
  4. Step 4: Simplify right side
    13,900.68x = 73,238,202.56
  5. Step 5: Solve for x
    x = 73,238,202.56/13,900.68
  6. Step 6: Final answer
    x = 5,268.68

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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.