Home / 20,843.06-31,270.44-8,371.84

Finding the Fourth Proportional to 20,843.06, 31,270.44 and 8,371.84

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Solution

The fourth proportional to 20,843.06, 31,270.44 and 8,371.84 is: 12,560.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,843.06 : 31,270.44 = 8,371.84 : x
  2. Step 2: Convert to fraction form
    20,843.06/31,270.44 = 8,371.84/x
  3. Step 3: Cross multiply
    20,843.06x = 31,270.44 × 8,371.84
  4. Step 4: Simplify right side
    20,843.06x = 261,791,120.41
  5. Step 5: Solve for x
    x = 261,791,120.41/20,843.06
  6. Step 6: Final answer
    x = 12,560.11

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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.