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Finding the Fourth Proportional to 11,798.27, 17,689.21 and 5,220.87

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Solution

The fourth proportional to 11,798.27, 17,689.21 and 5,220.87 is: 7,827.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,798.27 : 17,689.21 = 5,220.87 : x
  2. Step 2: Convert to fraction form
    11,798.27/17,689.21 = 5,220.87/x
  3. Step 3: Cross multiply
    11,798.27x = 17,689.21 × 5,220.87
  4. Step 4: Simplify right side
    11,798.27x = 92,353,052.76
  5. Step 5: Solve for x
    x = 92,353,052.76/11,798.27
  6. Step 6: Final answer
    x = 7,827.68

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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.