Home / 20,194.78-27,870.10-11,242.26

Finding the Fourth Proportional to 20,194.78, 27,870.10 and 11,242.26

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Solution

The fourth proportional to 20,194.78, 27,870.10 and 11,242.26 is: 15,515.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,194.78 : 27,870.10 = 11,242.26 : x
  2. Step 2: Convert to fraction form
    20,194.78/27,870.10 = 11,242.26/x
  3. Step 3: Cross multiply
    20,194.78x = 27,870.10 × 11,242.26
  4. Step 4: Simplify right side
    20,194.78x = 313,322,910.43
  5. Step 5: Solve for x
    x = 313,322,910.43/20,194.78
  6. Step 6: Final answer
    x = 15,515.04

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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.