Home / 20,803.55-31,202.25-6,764.85

Finding the Fourth Proportional to 20,803.55, 31,202.25 and 6,764.85

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Solution

The fourth proportional to 20,803.55, 31,202.25 and 6,764.85 is: 10,146.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.55 : 31,202.25 = 6,764.85 : x
  2. Step 2: Convert to fraction form
    20,803.55/31,202.25 = 6,764.85/x
  3. Step 3: Cross multiply
    20,803.55x = 31,202.25 × 6,764.85
  4. Step 4: Simplify right side
    20,803.55x = 211,078,540.91
  5. Step 5: Solve for x
    x = 211,078,540.91/20,803.55
  6. Step 6: Final answer
    x = 10,146.28

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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.