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Finding the Fourth Proportional to 15,462.57, 21,338.19 and 8,388.84

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Solution

The fourth proportional to 15,462.57, 21,338.19 and 8,388.84 is: 11,576.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,462.57 : 21,338.19 = 8,388.84 : x
  2. Step 2: Convert to fraction form
    15,462.57/21,338.19 = 8,388.84/x
  3. Step 3: Cross multiply
    15,462.57x = 21,338.19 × 8,388.84
  4. Step 4: Simplify right side
    15,462.57x = 179,002,661.80
  5. Step 5: Solve for x
    x = 179,002,661.80/15,462.57
  6. Step 6: Final answer
    x = 11,576.51

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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.