Home / 28,148.86-38,850.78-20,104.30

Finding the Fourth Proportional to 28,148.86, 38,850.78 and 20,104.30

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Solution

The fourth proportional to 28,148.86, 38,850.78 and 20,104.30 is: 27,747.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.86 : 38,850.78 = 20,104.30 : x
  2. Step 2: Convert to fraction form
    28,148.86/38,850.78 = 20,104.30/x
  3. Step 3: Cross multiply
    28,148.86x = 38,850.78 × 20,104.30
  4. Step 4: Simplify right side
    28,148.86x = 781,067,736.35
  5. Step 5: Solve for x
    x = 781,067,736.35/28,148.86
  6. Step 6: Final answer
    x = 27,747.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.