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Finding the Fourth Proportional to 38,525.80, 57,796.80 and 21,872.20

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Solution

The fourth proportional to 38,525.80, 57,796.80 and 21,872.20 is: 32,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,525.80 : 57,796.80 = 21,872.20 : x
  2. Step 2: Convert to fraction form
    38,525.80/57,796.80 = 21,872.20/x
  3. Step 3: Cross multiply
    38,525.80x = 57,796.80 × 21,872.20
  4. Step 4: Simplify right side
    38,525.80x = 1,264,143,168.96
  5. Step 5: Solve for x
    x = 1,264,143,168.96/38,525.80
  6. Step 6: Final answer
    x = 32,812.90

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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.