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Finding the Fourth Proportional to 10,879.68, 15,014.31 and 6,163.86

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Solution

The fourth proportional to 10,879.68, 15,014.31 and 6,163.86 is: 8,506.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.68 : 15,014.31 = 6,163.86 : x
  2. Step 2: Convert to fraction form
    10,879.68/15,014.31 = 6,163.86/x
  3. Step 3: Cross multiply
    10,879.68x = 15,014.31 × 6,163.86
  4. Step 4: Simplify right side
    10,879.68x = 92,546,104.84
  5. Step 5: Solve for x
    x = 92,546,104.84/10,879.68
  6. Step 6: Final answer
    x = 8,506.33

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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.