Home / 13,450.31-20,171.36-10,811.55

Finding the Fourth Proportional to 13,450.31, 20,171.36 and 10,811.55

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Solution

The fourth proportional to 13,450.31, 20,171.36 and 10,811.55 is: 16,214.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,450.31 : 20,171.36 = 10,811.55 : x
  2. Step 2: Convert to fraction form
    13,450.31/20,171.36 = 10,811.55/x
  3. Step 3: Cross multiply
    13,450.31x = 20,171.36 × 10,811.55
  4. Step 4: Simplify right side
    13,450.31x = 218,083,613.15
  5. Step 5: Solve for x
    x = 218,083,613.15/13,450.31
  6. Step 6: Final answer
    x = 16,214.03

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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.