Home / 21,326.44-31,991.28-5,744.20

Finding the Fourth Proportional to 21,326.44, 31,991.28 and 5,744.20

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Solution

The fourth proportional to 21,326.44, 31,991.28 and 5,744.20 is: 8,616.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.44 : 31,991.28 = 5,744.20 : x
  2. Step 2: Convert to fraction form
    21,326.44/31,991.28 = 5,744.20/x
  3. Step 3: Cross multiply
    21,326.44x = 31,991.28 × 5,744.20
  4. Step 4: Simplify right side
    21,326.44x = 183,764,310.58
  5. Step 5: Solve for x
    x = 183,764,310.58/21,326.44
  6. Step 6: Final answer
    x = 8,616.74

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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.