Home / 11,189.20-16,779.32-3,395.28

Finding the Fourth Proportional to 11,189.20, 16,779.32 and 3,395.28

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Solution

The fourth proportional to 11,189.20, 16,779.32 and 3,395.28 is: 5,091.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.20 : 16,779.32 = 3,395.28 : x
  2. Step 2: Convert to fraction form
    11,189.20/16,779.32 = 3,395.28/x
  3. Step 3: Cross multiply
    11,189.20x = 16,779.32 × 3,395.28
  4. Step 4: Simplify right side
    11,189.20x = 56,970,489.61
  5. Step 5: Solve for x
    x = 56,970,489.61/11,189.20
  6. Step 6: Final answer
    x = 5,091.56

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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.