Home / 20,114.78-30,177.26-11,801.75

Finding the Fourth Proportional to 20,114.78, 30,177.26 and 11,801.75

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Solution

The fourth proportional to 20,114.78, 30,177.26 and 11,801.75 is: 17,705.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114.78 : 30,177.26 = 11,801.75 : x
  2. Step 2: Convert to fraction form
    20,114.78/30,177.26 = 11,801.75/x
  3. Step 3: Cross multiply
    20,114.78x = 30,177.26 × 11,801.75
  4. Step 4: Simplify right side
    20,114.78x = 356,144,478.21
  5. Step 5: Solve for x
    x = 356,144,478.21/20,114.78
  6. Step 6: Final answer
    x = 17,705.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.