Home / 28,540.35-42,786.18-20,194.11

Finding the Fourth Proportional to 28,540.35, 42,786.18 and 20,194.11

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Solution

The fourth proportional to 28,540.35, 42,786.18 and 20,194.11 is: 30,273.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,540.35 : 42,786.18 = 20,194.11 : x
  2. Step 2: Convert to fraction form
    28,540.35/42,786.18 = 20,194.11/x
  3. Step 3: Cross multiply
    28,540.35x = 42,786.18 × 20,194.11
  4. Step 4: Simplify right side
    28,540.35x = 864,028,825.40
  5. Step 5: Solve for x
    x = 864,028,825.40/28,540.35
  6. Step 6: Final answer
    x = 30,273.94

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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.