Home / 18,629.20-27,943.80-5,481.58

Finding the Fourth Proportional to 18,629.20, 27,943.80 and 5,481.58

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Solution

The fourth proportional to 18,629.20, 27,943.80 and 5,481.58 is: 8,222.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,629.20 : 27,943.80 = 5,481.58 : x
  2. Step 2: Convert to fraction form
    18,629.20/27,943.80 = 5,481.58/x
  3. Step 3: Cross multiply
    18,629.20x = 27,943.80 × 5,481.58
  4. Step 4: Simplify right side
    18,629.20x = 153,176,089.43
  5. Step 5: Solve for x
    x = 153,176,089.43/18,629.20
  6. Step 6: Final answer
    x = 8,222.36

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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.