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Finding the Fourth Proportional to 36,391.32, 50,221.98 and 20,479.32

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Solution

The fourth proportional to 36,391.32, 50,221.98 and 20,479.32 is: 28,262.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,391.32 : 50,221.98 = 20,479.32 : x
  2. Step 2: Convert to fraction form
    36,391.32/50,221.98 = 20,479.32/x
  3. Step 3: Cross multiply
    36,391.32x = 50,221.98 × 20,479.32
  4. Step 4: Simplify right side
    36,391.32x = 1,028,511,999.45
  5. Step 5: Solve for x
    x = 1,028,511,999.45/36,391.32
  6. Step 6: Final answer
    x = 28,262.56

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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.