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Finding the Fourth Proportional to 36,387.78, 50,215.06 and 20,472.25

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Solution

The fourth proportional to 36,387.78, 50,215.06 and 20,472.25 is: 28,251.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,387.78 : 50,215.06 = 20,472.25 : x
  2. Step 2: Convert to fraction form
    36,387.78/50,215.06 = 20,472.25/x
  3. Step 3: Cross multiply
    36,387.78x = 50,215.06 × 20,472.25
  4. Step 4: Simplify right side
    36,387.78x = 1,028,015,262.09
  5. Step 5: Solve for x
    x = 1,028,015,262.09/36,387.78
  6. Step 6: Final answer
    x = 28,251.66

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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.