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Finding the Fourth Proportional to 36,381.60, 54,543.36 and 20,576.88

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Solution

The fourth proportional to 36,381.60, 54,543.36 and 20,576.88 is: 30,848.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,381.60 : 54,543.36 = 20,576.88 : x
  2. Step 2: Convert to fraction form
    36,381.60/54,543.36 = 20,576.88/x
  3. Step 3: Cross multiply
    36,381.60x = 54,543.36 × 20,576.88
  4. Step 4: Simplify right side
    36,381.60x = 1,122,332,173.52
  5. Step 5: Solve for x
    x = 1,122,332,173.52/36,381.60
  6. Step 6: Final answer
    x = 30,848.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.