Home / 13,649.36-20,469.68-5,327.36

Finding the Fourth Proportional to 13,649.36, 20,469.68 and 5,327.36

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Solution

The fourth proportional to 13,649.36, 20,469.68 and 5,327.36 is: 7,989.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.36 : 20,469.68 = 5,327.36 : x
  2. Step 2: Convert to fraction form
    13,649.36/20,469.68 = 5,327.36/x
  3. Step 3: Cross multiply
    13,649.36x = 20,469.68 × 5,327.36
  4. Step 4: Simplify right side
    13,649.36x = 109,049,354.44
  5. Step 5: Solve for x
    x = 109,049,354.44/13,649.36
  6. Step 6: Final answer
    x = 7,989.34

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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.