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Finding the Fourth Proportional to 18,376.68, 27,560.16 and 7,986

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Solution

The fourth proportional to 18,376.68, 27,560.16 and 7,986 is: 11,976.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,376.68 : 27,560.16 = 7,986 : x
  2. Step 2: Convert to fraction form
    18,376.68/27,560.16 = 7,986/x
  3. Step 3: Cross multiply
    18,376.68x = 27,560.16 × 7,986
  4. Step 4: Simplify right side
    18,376.68x = 220,095,437.76
  5. Step 5: Solve for x
    x = 220,095,437.76/18,376.68
  6. Step 6: Final answer
    x = 11,976.89

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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.