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Finding the Fourth Proportional to 18,558.67, 27,800.92 and 11,159.08

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Solution

The fourth proportional to 18,558.67, 27,800.92 and 11,159.08 is: 16,716.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.67 : 27,800.92 = 11,159.08 : x
  2. Step 2: Convert to fraction form
    18,558.67/27,800.92 = 11,159.08/x
  3. Step 3: Cross multiply
    18,558.67x = 27,800.92 × 11,159.08
  4. Step 4: Simplify right side
    18,558.67x = 310,232,690.35
  5. Step 5: Solve for x
    x = 310,232,690.35/18,558.67
  6. Step 6: Final answer
    x = 16,716.32

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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.