Home / 12,240.75-18,362.43-3,917.79

Finding the Fourth Proportional to 12,240.75, 18,362.43 and 3,917.79

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Solution

The fourth proportional to 12,240.75, 18,362.43 and 3,917.79 is: 5,877.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.75 : 18,362.43 = 3,917.79 : x
  2. Step 2: Convert to fraction form
    12,240.75/18,362.43 = 3,917.79/x
  3. Step 3: Cross multiply
    12,240.75x = 18,362.43 × 3,917.79
  4. Step 4: Simplify right side
    12,240.75x = 71,940,144.63
  5. Step 5: Solve for x
    x = 71,940,144.63/12,240.75
  6. Step 6: Final answer
    x = 5,877.10

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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.