Home / 12,629.88-18,945.23-4,309.56

Finding the Fourth Proportional to 12,629.88, 18,945.23 and 4,309.56

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Solution

The fourth proportional to 12,629.88, 18,945.23 and 4,309.56 is: 6,464.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.88 : 18,945.23 = 4,309.56 : x
  2. Step 2: Convert to fraction form
    12,629.88/18,945.23 = 4,309.56/x
  3. Step 3: Cross multiply
    12,629.88x = 18,945.23 × 4,309.56
  4. Step 4: Simplify right side
    12,629.88x = 81,645,583.85
  5. Step 5: Solve for x
    x = 81,645,583.85/12,629.88
  6. Step 6: Final answer
    x = 6,464.48

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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.