Home / 11,190.40-16,775.10-4,168.72

Finding the Fourth Proportional to 11,190.40, 16,775.10 and 4,168.72

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Solution

The fourth proportional to 11,190.40, 16,775.10 and 4,168.72 is: 6,249.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.40 : 16,775.10 = 4,168.72 : x
  2. Step 2: Convert to fraction form
    11,190.40/16,775.10 = 4,168.72/x
  3. Step 3: Cross multiply
    11,190.40x = 16,775.10 × 4,168.72
  4. Step 4: Simplify right side
    11,190.40x = 69,930,694.87
  5. Step 5: Solve for x
    x = 69,930,694.87/11,190.40
  6. Step 6: Final answer
    x = 6,249.17

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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.