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Finding the Fourth Proportional to 15,217, 20,999.46 and 8,593

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Solution

The fourth proportional to 15,217, 20,999.46 and 8,593 is: 11,858.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,217 : 20,999.46 = 8,593 : x
  2. Step 2: Convert to fraction form
    15,217/20,999.46 = 8,593/x
  3. Step 3: Cross multiply
    15,217x = 20,999.46 × 8,593
  4. Step 4: Simplify right side
    15,217x = 180,448,359.78
  5. Step 5: Solve for x
    x = 180,448,359.78/15,217
  6. Step 6: Final answer
    x = 11,858.34

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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.