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Finding the Fourth Proportional to 14,469.70, 21,704.55 and 7,908.70

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Solution

The fourth proportional to 14,469.70, 21,704.55 and 7,908.70 is: 11,863.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,469.70 : 21,704.55 = 7,908.70 : x
  2. Step 2: Convert to fraction form
    14,469.70/21,704.55 = 7,908.70/x
  3. Step 3: Cross multiply
    14,469.70x = 21,704.55 × 7,908.70
  4. Step 4: Simplify right side
    14,469.70x = 171,654,774.59
  5. Step 5: Solve for x
    x = 171,654,774.59/14,469.70
  6. Step 6: Final answer
    x = 11,863.05

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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.