Home / 13,571.96-20,450.39-11,160.79

Finding the Fourth Proportional to 13,571.96, 20,450.39 and 11,160.79

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Solution

The fourth proportional to 13,571.96, 20,450.39 and 11,160.79 is: 16,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.96 : 20,450.39 = 11,160.79 : x
  2. Step 2: Convert to fraction form
    13,571.96/20,450.39 = 11,160.79/x
  3. Step 3: Cross multiply
    13,571.96x = 20,450.39 × 11,160.79
  4. Step 4: Simplify right side
    13,571.96x = 228,242,401.28
  5. Step 5: Solve for x
    x = 228,242,401.28/13,571.96
  6. Step 6: Final answer
    x = 16,817.21

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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.