Home / 20,893.05-31,367.39-12,134.25

Finding the Fourth Proportional to 20,893.05, 31,367.39 and 12,134.25

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Solution

The fourth proportional to 20,893.05, 31,367.39 and 12,134.25 is: 18,217.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.05 : 31,367.39 = 12,134.25 : x
  2. Step 2: Convert to fraction form
    20,893.05/31,367.39 = 12,134.25/x
  3. Step 3: Cross multiply
    20,893.05x = 31,367.39 × 12,134.25
  4. Step 4: Simplify right side
    20,893.05x = 380,619,691.44
  5. Step 5: Solve for x
    x = 380,619,691.44/20,893.05
  6. Step 6: Final answer
    x = 18,217.53

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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.