Home / 11,163.96-15,406.06-6,128.18

Finding the Fourth Proportional to 11,163.96, 15,406.06 and 6,128.18

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Solution

The fourth proportional to 11,163.96, 15,406.06 and 6,128.18 is: 8,456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.96 : 15,406.06 = 6,128.18 : x
  2. Step 2: Convert to fraction form
    11,163.96/15,406.06 = 6,128.18/x
  3. Step 3: Cross multiply
    11,163.96x = 15,406.06 × 6,128.18
  4. Step 4: Simplify right side
    11,163.96x = 94,411,108.77
  5. Step 5: Solve for x
    x = 94,411,108.77/11,163.96
  6. Step 6: Final answer
    x = 8,456.78

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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.