Home / 28,771.70-43,157.64-7,995.20

Finding the Fourth Proportional to 28,771.70, 43,157.64 and 7,995.20

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Solution

The fourth proportional to 28,771.70, 43,157.64 and 7,995.20 is: 11,992.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,771.70 : 43,157.64 = 7,995.20 : x
  2. Step 2: Convert to fraction form
    28,771.70/43,157.64 = 7,995.20/x
  3. Step 3: Cross multiply
    28,771.70x = 43,157.64 × 7,995.20
  4. Step 4: Simplify right side
    28,771.70x = 345,053,747.54
  5. Step 5: Solve for x
    x = 345,053,747.54/28,771.70
  6. Step 6: Final answer
    x = 11,992.82

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Double scale
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Similar ratio
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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.