Home / 11,115.46-15,338.46-6,400.05

Finding the Fourth Proportional to 11,115.46, 15,338.46 and 6,400.05

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Solution

The fourth proportional to 11,115.46, 15,338.46 and 6,400.05 is: 8,831.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.46 : 15,338.46 = 6,400.05 : x
  2. Step 2: Convert to fraction form
    11,115.46/15,338.46 = 6,400.05/x
  3. Step 3: Cross multiply
    11,115.46x = 15,338.46 × 6,400.05
  4. Step 4: Simplify right side
    11,115.46x = 98,166,910.92
  5. Step 5: Solve for x
    x = 98,166,910.92/11,115.46
  6. Step 6: Final answer
    x = 8,831.57

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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.