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Finding the Fourth Proportional to 14,836.79, 20,473.92 and 8,121.08

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Solution

The fourth proportional to 14,836.79, 20,473.92 and 8,121.08 is: 11,206.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,836.79 : 20,473.92 = 8,121.08 : x
  2. Step 2: Convert to fraction form
    14,836.79/20,473.92 = 8,121.08/x
  3. Step 3: Cross multiply
    14,836.79x = 20,473.92 × 8,121.08
  4. Step 4: Simplify right side
    14,836.79x = 166,270,393.42
  5. Step 5: Solve for x
    x = 166,270,393.42/14,836.79
  6. Step 6: Final answer
    x = 11,206.63

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.