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Finding the Fourth Proportional to 27,896.92, 38,481.42 and 18,837.88

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Solution

The fourth proportional to 27,896.92, 38,481.42 and 18,837.88 is: 25,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,896.92 : 38,481.42 = 18,837.88 : x
  2. Step 2: Convert to fraction form
    27,896.92/38,481.42 = 18,837.88/x
  3. Step 3: Cross multiply
    27,896.92x = 38,481.42 × 18,837.88
  4. Step 4: Simplify right side
    27,896.92x = 724,908,372.19
  5. Step 5: Solve for x
    x = 724,908,372.19/27,896.92
  6. Step 6: Final answer
    x = 25,985.25

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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.