Home / 20,104.07-27,743.31-11,151.41

Finding the Fourth Proportional to 20,104.07, 27,743.31 and 11,151.41

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Solution

The fourth proportional to 20,104.07, 27,743.31 and 11,151.41 is: 15,388.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.07 : 27,743.31 = 11,151.41 : x
  2. Step 2: Convert to fraction form
    20,104.07/27,743.31 = 11,151.41/x
  3. Step 3: Cross multiply
    20,104.07x = 27,743.31 × 11,151.41
  4. Step 4: Simplify right side
    20,104.07x = 309,376,885.85
  5. Step 5: Solve for x
    x = 309,376,885.85/20,104.07
  6. Step 6: Final answer
    x = 15,388.77

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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.