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Finding the Fourth Proportional to 15,153, 20,914.02 and 8,529

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Solution

The fourth proportional to 15,153, 20,914.02 and 8,529 is: 11,771.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,153 : 20,914.02 = 8,529 : x
  2. Step 2: Convert to fraction form
    15,153/20,914.02 = 8,529/x
  3. Step 3: Cross multiply
    15,153x = 20,914.02 × 8,529
  4. Step 4: Simplify right side
    15,153x = 178,375,676.58
  5. Step 5: Solve for x
    x = 178,375,676.58/15,153
  6. Step 6: Final answer
    x = 11,771.64

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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.