Home / 10,122.21-15,169.23-5,181.44

Finding the Fourth Proportional to 10,122.21, 15,169.23 and 5,181.44

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Solution

The fourth proportional to 10,122.21, 15,169.23 and 5,181.44 is: 7,764.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.21 : 15,169.23 = 5,181.44 : x
  2. Step 2: Convert to fraction form
    10,122.21/15,169.23 = 5,181.44/x
  3. Step 3: Cross multiply
    10,122.21x = 15,169.23 × 5,181.44
  4. Step 4: Simplify right side
    10,122.21x = 78,598,379.25
  5. Step 5: Solve for x
    x = 78,598,379.25/10,122.21
  6. Step 6: Final answer
    x = 7,764.94

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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.