Home / 11,189.20-16,789.20-7,895.20

Finding the Fourth Proportional to 11,189.20, 16,789.20 and 7,895.20

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Solution

The fourth proportional to 11,189.20, 16,789.20 and 7,895.20 is: 11,846.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.20 : 16,789.20 = 7,895.20 : x
  2. Step 2: Convert to fraction form
    11,189.20/16,789.20 = 7,895.20/x
  3. Step 3: Cross multiply
    11,189.20x = 16,789.20 × 7,895.20
  4. Step 4: Simplify right side
    11,189.20x = 132,554,091.84
  5. Step 5: Solve for x
    x = 132,554,091.84/11,189.20
  6. Step 6: Final answer
    x = 11,846.61

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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.