Home / 20,361.12-30,542.04-13,385.58

Finding the Fourth Proportional to 20,361.12, 30,542.04 and 13,385.58

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Solution

The fourth proportional to 20,361.12, 30,542.04 and 13,385.58 is: 20,078.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.12 : 30,542.04 = 13,385.58 : x
  2. Step 2: Convert to fraction form
    20,361.12/30,542.04 = 13,385.58/x
  3. Step 3: Cross multiply
    20,361.12x = 30,542.04 × 13,385.58
  4. Step 4: Simplify right side
    20,361.12x = 408,822,919.78
  5. Step 5: Solve for x
    x = 408,822,919.78/20,361.12
  6. Step 6: Final answer
    x = 20,078.61

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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.