Home / 20,754.97-31,134.39-8,271.97

Finding the Fourth Proportional to 20,754.97, 31,134.39 and 8,271.97

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Solution

The fourth proportional to 20,754.97, 31,134.39 and 8,271.97 is: 12,408.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.97 : 31,134.39 = 8,271.97 : x
  2. Step 2: Convert to fraction form
    20,754.97/31,134.39 = 8,271.97/x
  3. Step 3: Cross multiply
    20,754.97x = 31,134.39 × 8,271.97
  4. Step 4: Simplify right side
    20,754.97x = 257,542,740.05
  5. Step 5: Solve for x
    x = 257,542,740.05/20,754.97
  6. Step 6: Final answer
    x = 12,408.73

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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.