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Finding the Fourth Proportional to 20,179.79, 27,855.66 and 17,335.78

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Solution

The fourth proportional to 20,179.79, 27,855.66 and 17,335.78 is: 23,929.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.79 : 27,855.66 = 17,335.78 : x
  2. Step 2: Convert to fraction form
    20,179.79/27,855.66 = 17,335.78/x
  3. Step 3: Cross multiply
    20,179.79x = 27,855.66 × 17,335.78
  4. Step 4: Simplify right side
    20,179.79x = 482,899,593.51
  5. Step 5: Solve for x
    x = 482,899,593.51/20,179.79
  6. Step 6: Final answer
    x = 23,929.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.