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Finding the Fourth Proportional to 18,383.05, 27,583.67 and 7,289.49

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Solution

The fourth proportional to 18,383.05, 27,583.67 and 7,289.49 is: 10,937.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383.05 : 27,583.67 = 7,289.49 : x
  2. Step 2: Convert to fraction form
    18,383.05/27,583.67 = 7,289.49/x
  3. Step 3: Cross multiply
    18,383.05x = 27,583.67 × 7,289.49
  4. Step 4: Simplify right side
    18,383.05x = 201,071,008.29
  5. Step 5: Solve for x
    x = 201,071,008.29/18,383.05
  6. Step 6: Final answer
    x = 10,937.85

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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.