Home / 12,381.88-18,568.20-4,983.84

Finding the Fourth Proportional to 12,381.88, 18,568.20 and 4,983.84

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Solution

The fourth proportional to 12,381.88, 18,568.20 and 4,983.84 is: 7,473.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381.88 : 18,568.20 = 4,983.84 : x
  2. Step 2: Convert to fraction form
    12,381.88/18,568.20 = 4,983.84/x
  3. Step 3: Cross multiply
    12,381.88x = 18,568.20 × 4,983.84
  4. Step 4: Simplify right side
    12,381.88x = 92,540,937.89
  5. Step 5: Solve for x
    x = 92,540,937.89/12,381.88
  6. Step 6: Final answer
    x = 7,473.90

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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.