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Finding the Fourth Proportional to 18,383.40, 27,502.20 and 15,945.30

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Solution

The fourth proportional to 18,383.40, 27,502.20 and 15,945.30 is: 23,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383.40 : 27,502.20 = 15,945.30 : x
  2. Step 2: Convert to fraction form
    18,383.40/27,502.20 = 15,945.30/x
  3. Step 3: Cross multiply
    18,383.40x = 27,502.20 × 15,945.30
  4. Step 4: Simplify right side
    18,383.40x = 438,530,829.66
  5. Step 5: Solve for x
    x = 438,530,829.66/18,383.40
  6. Step 6: Final answer
    x = 23,854.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.