Home / 13,512.36-20,239.38-13,181.88

Finding the Fourth Proportional to 13,512.36, 20,239.38 and 13,181.88

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Solution

The fourth proportional to 13,512.36, 20,239.38 and 13,181.88 is: 19,744.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.36 : 20,239.38 = 13,181.88 : x
  2. Step 2: Convert to fraction form
    13,512.36/20,239.38 = 13,181.88/x
  3. Step 3: Cross multiply
    13,512.36x = 20,239.38 × 13,181.88
  4. Step 4: Simplify right side
    13,512.36x = 266,793,078.43
  5. Step 5: Solve for x
    x = 266,793,078.43/13,512.36
  6. Step 6: Final answer
    x = 19,744.37

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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.