Home / 11,436.36-15,778.59-6,399.90

Finding the Fourth Proportional to 11,436.36, 15,778.59 and 6,399.90

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Solution

The fourth proportional to 11,436.36, 15,778.59 and 6,399.90 is: 8,829.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,436.36 : 15,778.59 = 6,399.90 : x
  2. Step 2: Convert to fraction form
    11,436.36/15,778.59 = 6,399.90/x
  3. Step 3: Cross multiply
    11,436.36x = 15,778.59 × 6,399.90
  4. Step 4: Simplify right side
    11,436.36x = 100,981,398.14
  5. Step 5: Solve for x
    x = 100,981,398.14/11,436.36
  6. Step 6: Final answer
    x = 8,829.85

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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.