Home / 13,431.70-20,147.55-11,293.30

Finding the Fourth Proportional to 13,431.70, 20,147.55 and 11,293.30

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Solution

The fourth proportional to 13,431.70, 20,147.55 and 11,293.30 is: 16,939.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.70 : 20,147.55 = 11,293.30 : x
  2. Step 2: Convert to fraction form
    13,431.70/20,147.55 = 11,293.30/x
  3. Step 3: Cross multiply
    13,431.70x = 20,147.55 × 11,293.30
  4. Step 4: Simplify right side
    13,431.70x = 227,532,326.42
  5. Step 5: Solve for x
    x = 227,532,326.42/13,431.70
  6. Step 6: Final answer
    x = 16,939.95

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Similar ratio
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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.