Home / 10,218.88-15,326.52-2,821.54

Finding the Fourth Proportional to 10,218.88, 15,326.52 and 2,821.54

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Solution

The fourth proportional to 10,218.88, 15,326.52 and 2,821.54 is: 4,231.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.88 : 15,326.52 = 2,821.54 : x
  2. Step 2: Convert to fraction form
    10,218.88/15,326.52 = 2,821.54/x
  3. Step 3: Cross multiply
    10,218.88x = 15,326.52 × 2,821.54
  4. Step 4: Simplify right side
    10,218.88x = 43,244,389.24
  5. Step 5: Solve for x
    x = 43,244,389.24/10,218.88
  6. Step 6: Final answer
    x = 4,231.81

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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.