Home / 20,571.82-30,859.53-5,780.86

Finding the Fourth Proportional to 20,571.82, 30,859.53 and 5,780.86

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Solution

The fourth proportional to 20,571.82, 30,859.53 and 5,780.86 is: 8,671.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.82 : 30,859.53 = 5,780.86 : x
  2. Step 2: Convert to fraction form
    20,571.82/30,859.53 = 5,780.86/x
  3. Step 3: Cross multiply
    20,571.82x = 30,859.53 × 5,780.86
  4. Step 4: Simplify right side
    20,571.82x = 178,394,622.60
  5. Step 5: Solve for x
    x = 178,394,622.60/20,571.82
  6. Step 6: Final answer
    x = 8,671.80

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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.