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Finding the Fourth Proportional to 18,232.20, 25,097.22 and 15,722.64

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Solution

The fourth proportional to 18,232.20, 25,097.22 and 15,722.64 is: 21,642.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,232.20 : 25,097.22 = 15,722.64 : x
  2. Step 2: Convert to fraction form
    18,232.20/25,097.22 = 15,722.64/x
  3. Step 3: Cross multiply
    18,232.20x = 25,097.22 × 15,722.64
  4. Step 4: Simplify right side
    18,232.20x = 394,594,555.06
  5. Step 5: Solve for x
    x = 394,594,555.06/18,232.20
  6. Step 6: Final answer
    x = 21,642.73

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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.