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Finding the Fourth Proportional to 14,568, 20,103.84 and 7,944

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Solution

The fourth proportional to 14,568, 20,103.84 and 7,944 is: 10,962.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,568 : 20,103.84 = 7,944 : x
  2. Step 2: Convert to fraction form
    14,568/20,103.84 = 7,944/x
  3. Step 3: Cross multiply
    14,568x = 20,103.84 × 7,944
  4. Step 4: Simplify right side
    14,568x = 159,704,904.96
  5. Step 5: Solve for x
    x = 159,704,904.96/14,568
  6. Step 6: Final answer
    x = 10,962.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.