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Finding the Fourth Proportional to 13,716.96, 20,575.20 and 3,328.32

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Solution

The fourth proportional to 13,716.96, 20,575.20 and 3,328.32 is: 4,992.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,716.96 : 20,575.20 = 3,328.32 : x
  2. Step 2: Convert to fraction form
    13,716.96/20,575.20 = 3,328.32/x
  3. Step 3: Cross multiply
    13,716.96x = 20,575.20 × 3,328.32
  4. Step 4: Simplify right side
    13,716.96x = 68,480,849.66
  5. Step 5: Solve for x
    x = 68,480,849.66/13,716.96
  6. Step 6: Final answer
    x = 4,992.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.