Home / 20,230.62-27,917.20-11,157.47

Finding the Fourth Proportional to 20,230.62, 27,917.20 and 11,157.47

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Solution

The fourth proportional to 20,230.62, 27,917.20 and 11,157.47 is: 15,396.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.62 : 27,917.20 = 11,157.47 : x
  2. Step 2: Convert to fraction form
    20,230.62/27,917.20 = 11,157.47/x
  3. Step 3: Cross multiply
    20,230.62x = 27,917.20 × 11,157.47
  4. Step 4: Simplify right side
    20,230.62x = 311,485,126.11
  5. Step 5: Solve for x
    x = 311,485,126.11/20,230.62
  6. Step 6: Final answer
    x = 15,396.72

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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.