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Finding the Fourth Proportional to 15,104.42, 20,843.66 and 8,389.88

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Solution

The fourth proportional to 15,104.42, 20,843.66 and 8,389.88 is: 11,577.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,104.42 : 20,843.66 = 8,389.88 : x
  2. Step 2: Convert to fraction form
    15,104.42/20,843.66 = 8,389.88/x
  3. Step 3: Cross multiply
    15,104.42x = 20,843.66 × 8,389.88
  4. Step 4: Simplify right side
    15,104.42x = 174,875,722.92
  5. Step 5: Solve for x
    x = 174,875,722.92/15,104.42
  6. Step 6: Final answer
    x = 11,577.79

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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.