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Finding the Fourth Proportional to 14,063.72, 19,411.78 and 8,755.42

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Solution

The fourth proportional to 14,063.72, 19,411.78 and 8,755.42 is: 12,084.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,063.72 : 19,411.78 = 8,755.42 : x
  2. Step 2: Convert to fraction form
    14,063.72/19,411.78 = 8,755.42/x
  3. Step 3: Cross multiply
    14,063.72x = 19,411.78 × 8,755.42
  4. Step 4: Simplify right side
    14,063.72x = 169,958,286.85
  5. Step 5: Solve for x
    x = 169,958,286.85/14,063.72
  6. Step 6: Final answer
    x = 12,084.87

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1.5x scale

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.