Home / 20,100.14-27,738.42-11,147.88

Finding the Fourth Proportional to 20,100.14, 27,738.42 and 11,147.88

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Solution

The fourth proportional to 20,100.14, 27,738.42 and 11,147.88 is: 15,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.14 : 27,738.42 = 11,147.88 : x
  2. Step 2: Convert to fraction form
    20,100.14/27,738.42 = 11,147.88/x
  3. Step 3: Cross multiply
    20,100.14x = 27,738.42 × 11,147.88
  4. Step 4: Simplify right side
    20,100.14x = 309,224,577.55
  5. Step 5: Solve for x
    x = 309,224,577.55/20,100.14
  6. Step 6: Final answer
    x = 15,384.20

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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.