Home / 20,380.36-30,570.54-13,453.24

Finding the Fourth Proportional to 20,380.36, 30,570.54 and 13,453.24

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Solution

The fourth proportional to 20,380.36, 30,570.54 and 13,453.24 is: 20,179.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.36 : 30,570.54 = 13,453.24 : x
  2. Step 2: Convert to fraction form
    20,380.36/30,570.54 = 13,453.24/x
  3. Step 3: Cross multiply
    20,380.36x = 30,570.54 × 13,453.24
  4. Step 4: Simplify right side
    20,380.36x = 411,272,811.55
  5. Step 5: Solve for x
    x = 411,272,811.55/20,380.36
  6. Step 6: Final answer
    x = 20,179.86

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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.