Home / 13,571.83-20,450.20-11,160.66

Finding the Fourth Proportional to 13,571.83, 20,450.20 and 11,160.66

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Solution

The fourth proportional to 13,571.83, 20,450.20 and 11,160.66 is: 16,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.83 : 20,450.20 = 11,160.66 : x
  2. Step 2: Convert to fraction form
    13,571.83/20,450.20 = 11,160.66/x
  3. Step 3: Cross multiply
    13,571.83x = 20,450.20 × 11,160.66
  4. Step 4: Simplify right side
    13,571.83x = 228,237,729.13
  5. Step 5: Solve for x
    x = 228,237,729.13/13,571.83
  6. Step 6: Final answer
    x = 16,817.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.