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Finding the Fourth Proportional to 15,644.91, 21,589.56 and 8,929.22

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Solution

The fourth proportional to 15,644.91, 21,589.56 and 8,929.22 is: 12,322.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.91 : 21,589.56 = 8,929.22 : x
  2. Step 2: Convert to fraction form
    15,644.91/21,589.56 = 8,929.22/x
  3. Step 3: Cross multiply
    15,644.91x = 21,589.56 × 8,929.22
  4. Step 4: Simplify right side
    15,644.91x = 192,778,060.63
  5. Step 5: Solve for x
    x = 192,778,060.63/15,644.91
  6. Step 6: Final answer
    x = 12,322.09

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