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Finding the Fourth Proportional to 18,964.60, 26,166.96 and 11,002.21

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Solution

The fourth proportional to 18,964.60, 26,166.96 and 11,002.21 is: 15,180.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,964.60 : 26,166.96 = 11,002.21 : x
  2. Step 2: Convert to fraction form
    18,964.60/26,166.96 = 11,002.21/x
  3. Step 3: Cross multiply
    18,964.60x = 26,166.96 × 11,002.21
  4. Step 4: Simplify right side
    18,964.60x = 287,894,388.98
  5. Step 5: Solve for x
    x = 287,894,388.98/18,964.60
  6. Step 6: Final answer
    x = 15,180.62

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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.