Home / 38,786.11-53,524.60-21,790.38

Finding the Fourth Proportional to 38,786.11, 53,524.60 and 21,790.38

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Solution

The fourth proportional to 38,786.11, 53,524.60 and 21,790.38 is: 30,070.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,786.11 : 53,524.60 = 21,790.38 : x
  2. Step 2: Convert to fraction form
    38,786.11/53,524.60 = 21,790.38/x
  3. Step 3: Cross multiply
    38,786.11x = 53,524.60 × 21,790.38
  4. Step 4: Simplify right side
    38,786.11x = 1,166,321,519.59
  5. Step 5: Solve for x
    x = 1,166,321,519.59/38,786.11
  6. Step 6: Final answer
    x = 30,070.60

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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.