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Finding the Fourth Proportional to 36,388.10, 50,211.51 and 20,472.21

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Solution

The fourth proportional to 36,388.10, 50,211.51 and 20,472.21 is: 28,249.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,388.10 : 50,211.51 = 20,472.21 : x
  2. Step 2: Convert to fraction form
    36,388.10/50,211.51 = 20,472.21/x
  3. Step 3: Cross multiply
    36,388.10x = 50,211.51 × 20,472.21
  4. Step 4: Simplify right side
    36,388.10x = 1,027,940,326.08
  5. Step 5: Solve for x
    x = 1,027,940,326.08/36,388.10
  6. Step 6: Final answer
    x = 28,249.36

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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.