Home / 20,087.10-30,121.20-8,993.88

Finding the Fourth Proportional to 20,087.10, 30,121.20 and 8,993.88

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Solution

The fourth proportional to 20,087.10, 30,121.20 and 8,993.88 is: 13,486.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.10 : 30,121.20 = 8,993.88 : x
  2. Step 2: Convert to fraction form
    20,087.10/30,121.20 = 8,993.88/x
  3. Step 3: Cross multiply
    20,087.10x = 30,121.20 × 8,993.88
  4. Step 4: Simplify right side
    20,087.10x = 270,906,458.26
  5. Step 5: Solve for x
    x = 270,906,458.26/20,087.10
  6. Step 6: Final answer
    x = 13,486.59

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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.