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Finding the Fourth Proportional to 15,644.60, 21,589.62 and 8,571

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Solution

The fourth proportional to 15,644.60, 21,589.62 and 8,571 is: 11,828.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.60 : 21,589.62 = 8,571 : x
  2. Step 2: Convert to fraction form
    15,644.60/21,589.62 = 8,571/x
  3. Step 3: Cross multiply
    15,644.60x = 21,589.62 × 8,571
  4. Step 4: Simplify right side
    15,644.60x = 185,044,633.02
  5. Step 5: Solve for x
    x = 185,044,633.02/15,644.60
  6. Step 6: Final answer
    x = 11,828.02

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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.