Home / 39,796.14-54,918.37-21,890.76

Finding the Fourth Proportional to 39,796.14, 54,918.37 and 21,890.76

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Solution

The fourth proportional to 39,796.14, 54,918.37 and 21,890.76 is: 30,209.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,796.14 : 54,918.37 = 21,890.76 : x
  2. Step 2: Convert to fraction form
    39,796.14/54,918.37 = 21,890.76/x
  3. Step 3: Cross multiply
    39,796.14x = 54,918.37 × 21,890.76
  4. Step 4: Simplify right side
    39,796.14x = 1,202,204,678.68
  5. Step 5: Solve for x
    x = 1,202,204,678.68/39,796.14
  6. Step 6: Final answer
    x = 30,209.07

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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.