Home / 11,163.85-15,406.06-6,128.16

Finding the Fourth Proportional to 11,163.85, 15,406.06 and 6,128.16

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Solution

The fourth proportional to 11,163.85, 15,406.06 and 6,128.16 is: 8,456.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.85 : 15,406.06 = 6,128.16 : x
  2. Step 2: Convert to fraction form
    11,163.85/15,406.06 = 6,128.16/x
  3. Step 3: Cross multiply
    11,163.85x = 15,406.06 × 6,128.16
  4. Step 4: Simplify right side
    11,163.85x = 94,410,812.66
  5. Step 5: Solve for x
    x = 94,410,812.66/11,163.85
  6. Step 6: Final answer
    x = 8,456.83

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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.