Home / 12,629.97-18,945-3,864.85

Finding the Fourth Proportional to 12,629.97, 18,945 and 3,864.85

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Solution

The fourth proportional to 12,629.97, 18,945 and 3,864.85 is: 5,797.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.97 : 18,945 = 3,864.85 : x
  2. Step 2: Convert to fraction form
    12,629.97/18,945 = 3,864.85/x
  3. Step 3: Cross multiply
    12,629.97x = 18,945 × 3,864.85
  4. Step 4: Simplify right side
    12,629.97x = 73,219,535.89
  5. Step 5: Solve for x
    x = 73,219,535.89/12,629.97
  6. Step 6: Final answer
    x = 5,797.29

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1.5x scale

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.