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Finding the Fourth Proportional to 12,808.48, 19,168.08 and 8,863.84

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Solution

The fourth proportional to 12,808.48, 19,168.08 and 8,863.84 is: 13,264.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.48 : 19,168.08 = 8,863.84 : x
  2. Step 2: Convert to fraction form
    12,808.48/19,168.08 = 8,863.84/x
  3. Step 3: Cross multiply
    12,808.48x = 19,168.08 × 8,863.84
  4. Step 4: Simplify right side
    12,808.48x = 169,902,794.23
  5. Step 5: Solve for x
    x = 169,902,794.23/12,808.48
  6. Step 6: Final answer
    x = 13,264.87

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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.