Home / 14,171.62-21,256.89-3,783.28

Finding the Fourth Proportional to 14,171.62, 21,256.89 and 3,783.28

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Solution

The fourth proportional to 14,171.62, 21,256.89 and 3,783.28 is: 5,674.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,171.62 : 21,256.89 = 3,783.28 : x
  2. Step 2: Convert to fraction form
    14,171.62/21,256.89 = 3,783.28/x
  3. Step 3: Cross multiply
    14,171.62x = 21,256.89 × 3,783.28
  4. Step 4: Simplify right side
    14,171.62x = 80,420,766.80
  5. Step 5: Solve for x
    x = 80,420,766.80/14,171.62
  6. Step 6: Final answer
    x = 5,674.78

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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.