Home / 20,025.80-27,635.20-11,073.68

Finding the Fourth Proportional to 20,025.80, 27,635.20 and 11,073.68

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Solution

The fourth proportional to 20,025.80, 27,635.20 and 11,073.68 is: 15,281.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,025.80 : 27,635.20 = 11,073.68 : x
  2. Step 2: Convert to fraction form
    20,025.80/27,635.20 = 11,073.68/x
  3. Step 3: Cross multiply
    20,025.80x = 27,635.20 × 11,073.68
  4. Step 4: Simplify right side
    20,025.80x = 306,023,361.54
  5. Step 5: Solve for x
    x = 306,023,361.54/20,025.80
  6. Step 6: Final answer
    x = 15,281.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.