Home / 13,900.05-20,851.08-3,906.27

Finding the Fourth Proportional to 13,900.05, 20,851.08 and 3,906.27

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Solution

The fourth proportional to 13,900.05, 20,851.08 and 3,906.27 is: 5,859.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.05 : 20,851.08 = 3,906.27 : x
  2. Step 2: Convert to fraction form
    13,900.05/20,851.08 = 3,906.27/x
  3. Step 3: Cross multiply
    13,900.05x = 20,851.08 × 3,906.27
  4. Step 4: Simplify right side
    13,900.05x = 81,449,948.27
  5. Step 5: Solve for x
    x = 81,449,948.27/13,900.05
  6. Step 6: Final answer
    x = 5,859.69

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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.