Home / 20,747.44-31,115.70-8,266.96

Finding the Fourth Proportional to 20,747.44, 31,115.70 and 8,266.96

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Solution

The fourth proportional to 20,747.44, 31,115.70 and 8,266.96 is: 12,398.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.44 : 31,115.70 = 8,266.96 : x
  2. Step 2: Convert to fraction form
    20,747.44/31,115.70 = 8,266.96/x
  3. Step 3: Cross multiply
    20,747.44x = 31,115.70 × 8,266.96
  4. Step 4: Simplify right side
    20,747.44x = 257,232,247.27
  5. Step 5: Solve for x
    x = 257,232,247.27/20,747.44
  6. Step 6: Final answer
    x = 12,398.26

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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.