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Finding the Fourth Proportional to 20,363.29, 30,544.94 and 5,571.61

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Solution

The fourth proportional to 20,363.29, 30,544.94 and 5,571.61 is: 8,357.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.29 : 30,544.94 = 5,571.61 : x
  2. Step 2: Convert to fraction form
    20,363.29/30,544.94 = 5,571.61/x
  3. Step 3: Cross multiply
    20,363.29x = 30,544.94 × 5,571.61
  4. Step 4: Simplify right side
    20,363.29x = 170,184,465.30
  5. Step 5: Solve for x
    x = 170,184,465.30/20,363.29
  6. Step 6: Final answer
    x = 8,357.42

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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.