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Finding the Fourth Proportional to 14,763.11, 20,372.36 and 8,388.87

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Solution

The fourth proportional to 14,763.11, 20,372.36 and 8,388.87 is: 11,576.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,763.11 : 20,372.36 = 8,388.87 : x
  2. Step 2: Convert to fraction form
    14,763.11/20,372.36 = 8,388.87/x
  3. Step 3: Cross multiply
    14,763.11x = 20,372.36 × 8,388.87
  4. Step 4: Simplify right side
    14,763.11x = 170,901,079.63
  5. Step 5: Solve for x
    x = 170,901,079.63/14,763.11
  6. Step 6: Final answer
    x = 11,576.22

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Why These Related Problems?

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