Home / 20,242.44-27,934.20-11,289.78

Finding the Fourth Proportional to 20,242.44, 27,934.20 and 11,289.78

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Solution

The fourth proportional to 20,242.44, 27,934.20 and 11,289.78 is: 15,579.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.44 : 27,934.20 = 11,289.78 : x
  2. Step 2: Convert to fraction form
    20,242.44/27,934.20 = 11,289.78/x
  3. Step 3: Cross multiply
    20,242.44x = 27,934.20 × 11,289.78
  4. Step 4: Simplify right side
    20,242.44x = 315,370,972.48
  5. Step 5: Solve for x
    x = 315,370,972.48/20,242.44
  6. Step 6: Final answer
    x = 15,579.69

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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.