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Finding the Fourth Proportional to 36,505, 50,378.66 and 20,589.09

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Solution

The fourth proportional to 36,505, 50,378.66 and 20,589.09 is: 28,413.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,505 : 50,378.66 = 20,589.09 : x
  2. Step 2: Convert to fraction form
    36,505/50,378.66 = 20,589.09/x
  3. Step 3: Cross multiply
    36,505x = 50,378.66 × 20,589.09
  4. Step 4: Simplify right side
    36,505x = 1,037,250,764.82
  5. Step 5: Solve for x
    x = 1,037,250,764.82/36,505
  6. Step 6: Final answer
    x = 28,413.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.