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Finding the Fourth Proportional to 18,751, 25,876.80 and 10,253.68

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Solution

The fourth proportional to 18,751, 25,876.80 and 10,253.68 is: 14,150.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751 : 25,876.80 = 10,253.68 : x
  2. Step 2: Convert to fraction form
    18,751/25,876.80 = 10,253.68/x
  3. Step 3: Cross multiply
    18,751x = 25,876.80 × 10,253.68
  4. Step 4: Simplify right side
    18,751x = 265,332,426.62
  5. Step 5: Solve for x
    x = 265,332,426.62/18,751
  6. Step 6: Final answer
    x = 14,150.31

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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.