Home / 11,289.20-16,939.56-7,995.20

Finding the Fourth Proportional to 11,289.20, 16,939.56 and 7,995.20

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Solution

The fourth proportional to 11,289.20, 16,939.56 and 7,995.20 is: 11,996.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.20 : 16,939.56 = 7,995.20 : x
  2. Step 2: Convert to fraction form
    11,289.20/16,939.56 = 7,995.20/x
  3. Step 3: Cross multiply
    11,289.20x = 16,939.56 × 7,995.20
  4. Step 4: Simplify right side
    11,289.20x = 135,435,170.11
  5. Step 5: Solve for x
    x = 135,435,170.11/11,289.20
  6. Step 6: Final answer
    x = 11,996.88

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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.