Home / 12,246.30-18,360.45-3,921.54

Finding the Fourth Proportional to 12,246.30, 18,360.45 and 3,921.54

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Solution

The fourth proportional to 12,246.30, 18,360.45 and 3,921.54 is: 5,879.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,246.30 : 18,360.45 = 3,921.54 : x
  2. Step 2: Convert to fraction form
    12,246.30/18,360.45 = 3,921.54/x
  3. Step 3: Cross multiply
    12,246.30x = 18,360.45 × 3,921.54
  4. Step 4: Simplify right side
    12,246.30x = 72,001,239.09
  5. Step 5: Solve for x
    x = 72,001,239.09/12,246.30
  6. Step 6: Final answer
    x = 5,879.43

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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.