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Finding the Fourth Proportional to 18,338, 25,313 and 10,886

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Solution

The fourth proportional to 18,338, 25,313 and 10,886 is: 15,026.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338 : 25,313 = 10,886 : x
  2. Step 2: Convert to fraction form
    18,338/25,313 = 10,886/x
  3. Step 3: Cross multiply
    18,338x = 25,313 × 10,886
  4. Step 4: Simplify right side
    18,338x = 275,557,318
  5. Step 5: Solve for x
    x = 275,557,318/18,338
  6. Step 6: Final answer
    x = 15,026.57

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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.