Home / 39,699.96-54,785.79-21,794.56

Finding the Fourth Proportional to 39,699.96, 54,785.79 and 21,794.56

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Solution

The fourth proportional to 39,699.96, 54,785.79 and 21,794.56 is: 30,076.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,699.96 : 54,785.79 = 21,794.56 : x
  2. Step 2: Convert to fraction form
    39,699.96/54,785.79 = 21,794.56/x
  3. Step 3: Cross multiply
    39,699.96x = 54,785.79 × 21,794.56
  4. Step 4: Simplify right side
    39,699.96x = 1,194,032,187.30
  5. Step 5: Solve for x
    x = 1,194,032,187.30/39,699.96
  6. Step 6: Final answer
    x = 30,076.41

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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.