Home / 14,169.62-21,253.89-3,781.28

Finding the Fourth Proportional to 14,169.62, 21,253.89 and 3,781.28

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Solution

The fourth proportional to 14,169.62, 21,253.89 and 3,781.28 is: 5,671.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,169.62 : 21,253.89 = 3,781.28 : x
  2. Step 2: Convert to fraction form
    14,169.62/21,253.89 = 3,781.28/x
  3. Step 3: Cross multiply
    14,169.62x = 21,253.89 × 3,781.28
  4. Step 4: Simplify right side
    14,169.62x = 80,366,909.18
  5. Step 5: Solve for x
    x = 80,366,909.18/14,169.62
  6. Step 6: Final answer
    x = 5,671.78

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1.5x scale

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.