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Finding the Fourth Proportional to 19,635.12, 27,084.78 and 18,322.92

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Solution

The fourth proportional to 19,635.12, 27,084.78 and 18,322.92 is: 25,274.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,635.12 : 27,084.78 = 18,322.92 : x
  2. Step 2: Convert to fraction form
    19,635.12/27,084.78 = 18,322.92/x
  3. Step 3: Cross multiply
    19,635.12x = 27,084.78 × 18,322.92
  4. Step 4: Simplify right side
    19,635.12x = 496,272,257.16
  5. Step 5: Solve for x
    x = 496,272,257.16/19,635.12
  6. Step 6: Final answer
    x = 25,274.72

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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.