Home / 20,310.78-30,469.07-6,271.97

Finding the Fourth Proportional to 20,310.78, 30,469.07 and 6,271.97

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Solution

The fourth proportional to 20,310.78, 30,469.07 and 6,271.97 is: 9,408.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.78 : 30,469.07 = 6,271.97 : x
  2. Step 2: Convert to fraction form
    20,310.78/30,469.07 = 6,271.97/x
  3. Step 3: Cross multiply
    20,310.78x = 30,469.07 × 6,271.97
  4. Step 4: Simplify right side
    20,310.78x = 191,100,909.26
  5. Step 5: Solve for x
    x = 191,100,909.26/20,310.78
  6. Step 6: Final answer
    x = 9,408.84

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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.