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Finding the Fourth Proportional to 12,496.80, 18,712.80 and 9,883.20

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Solution

The fourth proportional to 12,496.80, 18,712.80 and 9,883.20 is: 14,799.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,496.80 : 18,712.80 = 9,883.20 : x
  2. Step 2: Convert to fraction form
    12,496.80/18,712.80 = 9,883.20/x
  3. Step 3: Cross multiply
    12,496.80x = 18,712.80 × 9,883.20
  4. Step 4: Simplify right side
    12,496.80x = 184,942,344.96
  5. Step 5: Solve for x
    x = 184,942,344.96/12,496.80
  6. Step 6: Final answer
    x = 14,799.18

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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.