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Finding the Fourth Proportional to 36,506.80, 54,760.20 and 20,911.60

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Solution

The fourth proportional to 36,506.80, 54,760.20 and 20,911.60 is: 31,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,506.80 : 54,760.20 = 20,911.60 : x
  2. Step 2: Convert to fraction form
    36,506.80/54,760.20 = 20,911.60/x
  3. Step 3: Cross multiply
    36,506.80x = 54,760.20 × 20,911.60
  4. Step 4: Simplify right side
    36,506.80x = 1,145,123,398.32
  5. Step 5: Solve for x
    x = 1,145,123,398.32/36,506.80
  6. Step 6: Final answer
    x = 31,367.40

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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.