Home / 38,191.30-57,286.74-20,771.84

Finding the Fourth Proportional to 38,191.30, 57,286.74 and 20,771.84

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Solution

The fourth proportional to 38,191.30, 57,286.74 and 20,771.84 is: 31,157.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,191.30 : 57,286.74 = 20,771.84 : x
  2. Step 2: Convert to fraction form
    38,191.30/57,286.74 = 20,771.84/x
  3. Step 3: Cross multiply
    38,191.30x = 57,286.74 × 20,771.84
  4. Step 4: Simplify right side
    38,191.30x = 1,189,951,218.51
  5. Step 5: Solve for x
    x = 1,189,951,218.51/38,191.30
  6. Step 6: Final answer
    x = 31,157.65

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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.