Home / 13,781.24-20,670.74-4,418.73

Finding the Fourth Proportional to 13,781.24, 20,670.74 and 4,418.73

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Solution

The fourth proportional to 13,781.24, 20,670.74 and 4,418.73 is: 6,627.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.24 : 20,670.74 = 4,418.73 : x
  2. Step 2: Convert to fraction form
    13,781.24/20,670.74 = 4,418.73/x
  3. Step 3: Cross multiply
    13,781.24x = 20,670.74 × 4,418.73
  4. Step 4: Simplify right side
    13,781.24x = 91,338,396.87
  5. Step 5: Solve for x
    x = 91,338,396.87/13,781.24
  6. Step 6: Final answer
    x = 6,627.74

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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.