Home / 28,771.20-43,157.44-7,994.56

Finding the Fourth Proportional to 28,771.20, 43,157.44 and 7,994.56

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Solution

The fourth proportional to 28,771.20, 43,157.44 and 7,994.56 is: 11,992.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,771.20 : 43,157.44 = 7,994.56 : x
  2. Step 2: Convert to fraction form
    28,771.20/43,157.44 = 7,994.56/x
  3. Step 3: Cross multiply
    28,771.20x = 43,157.44 × 7,994.56
  4. Step 4: Simplify right side
    28,771.20x = 345,024,743.53
  5. Step 5: Solve for x
    x = 345,024,743.53/28,771.20
  6. Step 6: Final answer
    x = 11,992.02

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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.