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Finding the Fourth Proportional to 18,751, 25,879.62 and 11,299

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Solution

The fourth proportional to 18,751, 25,879.62 and 11,299 is: 15,594.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751 : 25,879.62 = 11,299 : x
  2. Step 2: Convert to fraction form
    18,751/25,879.62 = 11,299/x
  3. Step 3: Cross multiply
    18,751x = 25,879.62 × 11,299
  4. Step 4: Simplify right side
    18,751x = 292,413,826.38
  5. Step 5: Solve for x
    x = 292,413,826.38/18,751
  6. Step 6: Final answer
    x = 15,594.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.