Home / 20,100.36-27,740.21-11,150.75

Finding the Fourth Proportional to 20,100.36, 27,740.21 and 11,150.75

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Solution

The fourth proportional to 20,100.36, 27,740.21 and 11,150.75 is: 15,388.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.36 : 27,740.21 = 11,150.75 : x
  2. Step 2: Convert to fraction form
    20,100.36/27,740.21 = 11,150.75/x
  3. Step 3: Cross multiply
    20,100.36x = 27,740.21 × 11,150.75
  4. Step 4: Simplify right side
    20,100.36x = 309,323,952.20
  5. Step 5: Solve for x
    x = 309,323,952.20/20,100.36
  6. Step 6: Final answer
    x = 15,388.98

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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.