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Finding the Fourth Proportional to 13,512.66, 20,231.72 and 6,924.66

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Solution

The fourth proportional to 13,512.66, 20,231.72 and 6,924.66 is: 10,367.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.66 : 20,231.72 = 6,924.66 : x
  2. Step 2: Convert to fraction form
    13,512.66/20,231.72 = 6,924.66/x
  3. Step 3: Cross multiply
    13,512.66x = 20,231.72 × 6,924.66
  4. Step 4: Simplify right side
    13,512.66x = 140,097,782.22
  5. Step 5: Solve for x
    x = 140,097,782.22/13,512.66
  6. Step 6: Final answer
    x = 10,367.89

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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.