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Finding the Fourth Proportional to 18,766.27, 25,902.75 and 11,217.88

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Solution

The fourth proportional to 18,766.27, 25,902.75 and 11,217.88 is: 15,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,766.27 : 25,902.75 = 11,217.88 : x
  2. Step 2: Convert to fraction form
    18,766.27/25,902.75 = 11,217.88/x
  3. Step 3: Cross multiply
    18,766.27x = 25,902.75 × 11,217.88
  4. Step 4: Simplify right side
    18,766.27x = 290,573,941.17
  5. Step 5: Solve for x
    x = 290,573,941.17/18,766.27
  6. Step 6: Final answer
    x = 15,483.84

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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.