Home / 20,174.78-30,262.07-5,181.89

Finding the Fourth Proportional to 20,174.78, 30,262.07 and 5,181.89

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Solution

The fourth proportional to 20,174.78, 30,262.07 and 5,181.89 is: 7,772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.78 : 30,262.07 = 5,181.89 : x
  2. Step 2: Convert to fraction form
    20,174.78/30,262.07 = 5,181.89/x
  3. Step 3: Cross multiply
    20,174.78x = 30,262.07 × 5,181.89
  4. Step 4: Simplify right side
    20,174.78x = 156,814,579.56
  5. Step 5: Solve for x
    x = 156,814,579.56/20,174.78
  6. Step 6: Final answer
    x = 7,772.80

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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.