Home / 20,784.42-31,168.39-12,025.48

Finding the Fourth Proportional to 20,784.42, 31,168.39 and 12,025.48

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Solution

The fourth proportional to 20,784.42, 31,168.39 and 12,025.48 is: 18,033.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.42 : 31,168.39 = 12,025.48 : x
  2. Step 2: Convert to fraction form
    20,784.42/31,168.39 = 12,025.48/x
  3. Step 3: Cross multiply
    20,784.42x = 31,168.39 × 12,025.48
  4. Step 4: Simplify right side
    20,784.42x = 374,814,850.58
  5. Step 5: Solve for x
    x = 374,814,850.58/20,784.42
  6. Step 6: Final answer
    x = 18,033.45

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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.