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Finding the Fourth Proportional to 11,248, 16,872.84 and 4,322.56

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Solution

The fourth proportional to 11,248, 16,872.84 and 4,322.56 is: 6,484.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,248 : 16,872.84 = 4,322.56 : x
  2. Step 2: Convert to fraction form
    11,248/16,872.84 = 4,322.56/x
  3. Step 3: Cross multiply
    11,248x = 16,872.84 × 4,322.56
  4. Step 4: Simplify right side
    11,248x = 72,933,863.27
  5. Step 5: Solve for x
    x = 72,933,863.27/11,248
  6. Step 6: Final answer
    x = 6,484.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.