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Finding the Fourth Proportional to 36,701.53, 50,648.78 and 20,789.28

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Solution

The fourth proportional to 36,701.53, 50,648.78 and 20,789.28 is: 28,689.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,701.53 : 50,648.78 = 20,789.28 : x
  2. Step 2: Convert to fraction form
    36,701.53/50,648.78 = 20,789.28/x
  3. Step 3: Cross multiply
    36,701.53x = 50,648.78 × 20,789.28
  4. Step 4: Simplify right side
    36,701.53x = 1,052,951,795.70
  5. Step 5: Solve for x
    x = 1,052,951,795.70/36,701.53
  6. Step 6: Final answer
    x = 28,689.59

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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.