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Finding the Fourth Proportional to 18,393.58, 27,505.59 and 13,658.68

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Solution

The fourth proportional to 18,393.58, 27,505.59 and 13,658.68 is: 20,425.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.58 : 27,505.59 = 13,658.68 : x
  2. Step 2: Convert to fraction form
    18,393.58/27,505.59 = 13,658.68/x
  3. Step 3: Cross multiply
    18,393.58x = 27,505.59 × 13,658.68
  4. Step 4: Simplify right side
    18,393.58x = 375,690,052.02
  5. Step 5: Solve for x
    x = 375,690,052.02/18,393.58
  6. Step 6: Final answer
    x = 20,425.06

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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.