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Finding the Fourth Proportional to 18,891.92, 26,070.87 and 10,508.42

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Solution

The fourth proportional to 18,891.92, 26,070.87 and 10,508.42 is: 14,501.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.92 : 26,070.87 = 10,508.42 : x
  2. Step 2: Convert to fraction form
    18,891.92/26,070.87 = 10,508.42/x
  3. Step 3: Cross multiply
    18,891.92x = 26,070.87 × 10,508.42
  4. Step 4: Simplify right side
    18,891.92x = 273,963,651.73
  5. Step 5: Solve for x
    x = 273,963,651.73/18,891.92
  6. Step 6: Final answer
    x = 14,501.63

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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.