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Finding the Fourth Proportional to 18,359.92, 25,383 and 13,572.31

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Solution

The fourth proportional to 18,359.92, 25,383 and 13,572.31 is: 18,764.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,359.92 : 25,383 = 13,572.31 : x
  2. Step 2: Convert to fraction form
    18,359.92/25,383 = 13,572.31/x
  3. Step 3: Cross multiply
    18,359.92x = 25,383 × 13,572.31
  4. Step 4: Simplify right side
    18,359.92x = 344,505,944.73
  5. Step 5: Solve for x
    x = 344,505,944.73/18,359.92
  6. Step 6: Final answer
    x = 18,764.02

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1.5x scale

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.