Home / 12,629.50-18,947.28-3,864.48

Finding the Fourth Proportional to 12,629.50, 18,947.28 and 3,864.48

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Solution

The fourth proportional to 12,629.50, 18,947.28 and 3,864.48 is: 5,797.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.50 : 18,947.28 = 3,864.48 : x
  2. Step 2: Convert to fraction form
    12,629.50/18,947.28 = 3,864.48/x
  3. Step 3: Cross multiply
    12,629.50x = 18,947.28 × 3,864.48
  4. Step 4: Simplify right side
    12,629.50x = 73,221,384.61
  5. Step 5: Solve for x
    x = 73,221,384.61/12,629.50
  6. Step 6: Final answer
    x = 5,797.65

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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.