Home / 20,112.21-27,752.63-11,157.48

Finding the Fourth Proportional to 20,112.21, 27,752.63 and 11,157.48

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Solution

The fourth proportional to 20,112.21, 27,752.63 and 11,157.48 is: 15,396.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.21 : 27,752.63 = 11,157.48 : x
  2. Step 2: Convert to fraction form
    20,112.21/27,752.63 = 11,157.48/x
  3. Step 3: Cross multiply
    20,112.21x = 27,752.63 × 11,157.48
  4. Step 4: Simplify right side
    20,112.21x = 309,649,358.39
  5. Step 5: Solve for x
    x = 309,649,358.39/20,112.21
  6. Step 6: Final answer
    x = 15,396.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.