Home / 14,520.72-21,781.08-11,940.60

Finding the Fourth Proportional to 14,520.72, 21,781.08 and 11,940.60

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Solution

The fourth proportional to 14,520.72, 21,781.08 and 11,940.60 is: 17,910.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,520.72 : 21,781.08 = 11,940.60 : x
  2. Step 2: Convert to fraction form
    14,520.72/21,781.08 = 11,940.60/x
  3. Step 3: Cross multiply
    14,520.72x = 21,781.08 × 11,940.60
  4. Step 4: Simplify right side
    14,520.72x = 260,079,163.85
  5. Step 5: Solve for x
    x = 260,079,163.85/14,520.72
  6. Step 6: Final answer
    x = 17,910.90

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Similar ratio
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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.