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Finding the Fourth Proportional to 18,383.70, 27,616.56 and 11,368.90

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Solution

The fourth proportional to 18,383.70, 27,616.56 and 11,368.90 is: 17,078.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383.70 : 27,616.56 = 11,368.90 : x
  2. Step 2: Convert to fraction form
    18,383.70/27,616.56 = 11,368.90/x
  3. Step 3: Cross multiply
    18,383.70x = 27,616.56 × 11,368.90
  4. Step 4: Simplify right side
    18,383.70x = 313,969,908.98
  5. Step 5: Solve for x
    x = 313,969,908.98/18,383.70
  6. Step 6: Final answer
    x = 17,078.71

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1.5x scale

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.