Home / 14,385.85-21,578.82-3,997.60

Finding the Fourth Proportional to 14,385.85, 21,578.82 and 3,997.60

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Solution

The fourth proportional to 14,385.85, 21,578.82 and 3,997.60 is: 5,996.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,385.85 : 21,578.82 = 3,997.60 : x
  2. Step 2: Convert to fraction form
    14,385.85/21,578.82 = 3,997.60/x
  3. Step 3: Cross multiply
    14,385.85x = 21,578.82 × 3,997.60
  4. Step 4: Simplify right side
    14,385.85x = 86,263,436.88
  5. Step 5: Solve for x
    x = 86,263,436.88/14,385.85
  6. Step 6: Final answer
    x = 5,996.41

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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.