Home / 11,120.20-15,342.15-6,404.38

Finding the Fourth Proportional to 11,120.20, 15,342.15 and 6,404.38

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Solution

The fourth proportional to 11,120.20, 15,342.15 and 6,404.38 is: 8,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.20 : 15,342.15 = 6,404.38 : x
  2. Step 2: Convert to fraction form
    11,120.20/15,342.15 = 6,404.38/x
  3. Step 3: Cross multiply
    11,120.20x = 15,342.15 × 6,404.38
  4. Step 4: Simplify right side
    11,120.20x = 98,256,958.62
  5. Step 5: Solve for x
    x = 98,256,958.62/11,120.20
  6. Step 6: Final answer
    x = 8,835.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.