Home / 11,129.55-16,688.94-4,112.87

Finding the Fourth Proportional to 11,129.55, 16,688.94 and 4,112.87

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Solution

The fourth proportional to 11,129.55, 16,688.94 and 4,112.87 is: 6,167.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.55 : 16,688.94 = 4,112.87 : x
  2. Step 2: Convert to fraction form
    11,129.55/16,688.94 = 4,112.87/x
  3. Step 3: Cross multiply
    11,129.55x = 16,688.94 × 4,112.87
  4. Step 4: Simplify right side
    11,129.55x = 68,639,440.66
  5. Step 5: Solve for x
    x = 68,639,440.66/11,129.55
  6. Step 6: Final answer
    x = 6,167.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.