Home / 20,103.78-27,743.66-11,150.99

Finding the Fourth Proportional to 20,103.78, 27,743.66 and 11,150.99

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Solution

The fourth proportional to 20,103.78, 27,743.66 and 11,150.99 is: 15,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.78 : 27,743.66 = 11,150.99 : x
  2. Step 2: Convert to fraction form
    20,103.78/27,743.66 = 11,150.99/x
  3. Step 3: Cross multiply
    20,103.78x = 27,743.66 × 11,150.99
  4. Step 4: Simplify right side
    20,103.78x = 309,369,080.75
  5. Step 5: Solve for x
    x = 309,369,080.75/20,103.78
  6. Step 6: Final answer
    x = 15,388.60

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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.