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Finding the Fourth Proportional to 18,347, 25,318.92 and 11,273.36

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Solution

The fourth proportional to 18,347, 25,318.92 and 11,273.36 is: 15,557.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,347 : 25,318.92 = 11,273.36 : x
  2. Step 2: Convert to fraction form
    18,347/25,318.92 = 11,273.36/x
  3. Step 3: Cross multiply
    18,347x = 25,318.92 × 11,273.36
  4. Step 4: Simplify right side
    18,347x = 285,429,299.97
  5. Step 5: Solve for x
    x = 285,429,299.97/18,347
  6. Step 6: Final answer
    x = 15,557.27

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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.