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Finding the Fourth Proportional to 18,801, 25,945.40 and 11,349

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Solution

The fourth proportional to 18,801, 25,945.40 and 11,349 is: 15,661.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801 : 25,945.40 = 11,349 : x
  2. Step 2: Convert to fraction form
    18,801/25,945.40 = 11,349/x
  3. Step 3: Cross multiply
    18,801x = 25,945.40 × 11,349
  4. Step 4: Simplify right side
    18,801x = 294,454,344.60
  5. Step 5: Solve for x
    x = 294,454,344.60/18,801
  6. Step 6: Final answer
    x = 15,661.63

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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.