Home / 21,327.28-31,992.84-5,744.56

Finding the Fourth Proportional to 21,327.28, 31,992.84 and 5,744.56

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Solution

The fourth proportional to 21,327.28, 31,992.84 and 5,744.56 is: 8,617.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.28 : 31,992.84 = 5,744.56 : x
  2. Step 2: Convert to fraction form
    21,327.28/31,992.84 = 5,744.56/x
  3. Step 3: Cross multiply
    21,327.28x = 31,992.84 × 5,744.56
  4. Step 4: Simplify right side
    21,327.28x = 183,784,788.95
  5. Step 5: Solve for x
    x = 183,784,788.95/21,327.28
  6. Step 6: Final answer
    x = 8,617.36

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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.