Home / 12,125.52-18,188.26-3,917.52

Finding the Fourth Proportional to 12,125.52, 18,188.26 and 3,917.52

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Solution

The fourth proportional to 12,125.52, 18,188.26 and 3,917.52 is: 5,876.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.52 : 18,188.26 = 3,917.52 : x
  2. Step 2: Convert to fraction form
    12,125.52/18,188.26 = 3,917.52/x
  3. Step 3: Cross multiply
    12,125.52x = 18,188.26 × 3,917.52
  4. Step 4: Simplify right side
    12,125.52x = 71,252,872.32
  5. Step 5: Solve for x
    x = 71,252,872.32/12,125.52
  6. Step 6: Final answer
    x = 5,876.27

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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.