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Finding the Fourth Proportional to 15,310.52, 21,128.36 and 8,596

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Solution

The fourth proportional to 15,310.52, 21,128.36 and 8,596 is: 11,862.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.52 : 21,128.36 = 8,596 : x
  2. Step 2: Convert to fraction form
    15,310.52/21,128.36 = 8,596/x
  3. Step 3: Cross multiply
    15,310.52x = 21,128.36 × 8,596
  4. Step 4: Simplify right side
    15,310.52x = 181,619,382.56
  5. Step 5: Solve for x
    x = 181,619,382.56/15,310.52
  6. Step 6: Final answer
    x = 11,862.39

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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.