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Finding the Fourth Proportional to 38,500.20, 57,707.10 and 21,868.20

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Solution

The fourth proportional to 38,500.20, 57,707.10 and 21,868.20 is: 32,777.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,500.20 : 57,707.10 = 21,868.20 : x
  2. Step 2: Convert to fraction form
    38,500.20/57,707.10 = 21,868.20/x
  3. Step 3: Cross multiply
    38,500.20x = 57,707.10 × 21,868.20
  4. Step 4: Simplify right side
    38,500.20x = 1,261,950,404.22
  5. Step 5: Solve for x
    x = 1,261,950,404.22/38,500.20
  6. Step 6: Final answer
    x = 32,777.76

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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.