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Finding the Fourth Proportional to 15,053.78, 20,774.21 and 8,339.83

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Solution

The fourth proportional to 15,053.78, 20,774.21 and 8,339.83 is: 11,508.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,053.78 : 20,774.21 = 8,339.83 : x
  2. Step 2: Convert to fraction form
    15,053.78/20,774.21 = 8,339.83/x
  3. Step 3: Cross multiply
    15,053.78x = 20,774.21 × 8,339.83
  4. Step 4: Simplify right side
    15,053.78x = 173,253,286.15
  5. Step 5: Solve for x
    x = 173,253,286.15/15,053.78
  6. Step 6: Final answer
    x = 11,508.95

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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.