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Finding the Fourth Proportional to 18,213.21, 25,124.72 and 11,496.42

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Solution

The fourth proportional to 18,213.21, 25,124.72 and 11,496.42 is: 15,859.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.21 : 25,124.72 = 11,496.42 : x
  2. Step 2: Convert to fraction form
    18,213.21/25,124.72 = 11,496.42/x
  3. Step 3: Cross multiply
    18,213.21x = 25,124.72 × 11,496.42
  4. Step 4: Simplify right side
    18,213.21x = 288,844,276.02
  5. Step 5: Solve for x
    x = 288,844,276.02/18,213.21
  6. Step 6: Final answer
    x = 15,859.05

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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.