Home / 13,783.85-20,672.66-3,922.91

Finding the Fourth Proportional to 13,783.85, 20,672.66 and 3,922.91

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Solution

The fourth proportional to 13,783.85, 20,672.66 and 3,922.91 is: 5,883.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.85 : 20,672.66 = 3,922.91 : x
  2. Step 2: Convert to fraction form
    13,783.85/20,672.66 = 3,922.91/x
  3. Step 3: Cross multiply
    13,783.85x = 20,672.66 × 3,922.91
  4. Step 4: Simplify right side
    13,783.85x = 81,096,861.66
  5. Step 5: Solve for x
    x = 81,096,861.66/13,783.85
  6. Step 6: Final answer
    x = 5,883.47

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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.