Home / 20,571.38-30,858.27-5,781.45

Finding the Fourth Proportional to 20,571.38, 30,858.27 and 5,781.45

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Solution

The fourth proportional to 20,571.38, 30,858.27 and 5,781.45 is: 8,672.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.38 : 30,858.27 = 5,781.45 : x
  2. Step 2: Convert to fraction form
    20,571.38/30,858.27 = 5,781.45/x
  3. Step 3: Cross multiply
    20,571.38x = 30,858.27 × 5,781.45
  4. Step 4: Simplify right side
    20,571.38x = 178,405,545.09
  5. Step 5: Solve for x
    x = 178,405,545.09/20,571.38
  6. Step 6: Final answer
    x = 8,672.51

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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.