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Finding the Fourth Proportional to 18,013.27, 27,021.27 and 4,865.45

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Solution

The fourth proportional to 18,013.27, 27,021.27 and 4,865.45 is: 7,298.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,013.27 : 27,021.27 = 4,865.45 : x
  2. Step 2: Convert to fraction form
    18,013.27/27,021.27 = 4,865.45/x
  3. Step 3: Cross multiply
    18,013.27x = 27,021.27 × 4,865.45
  4. Step 4: Simplify right side
    18,013.27x = 131,470,638.12
  5. Step 5: Solve for x
    x = 131,470,638.12/18,013.27
  6. Step 6: Final answer
    x = 7,298.54

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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.