Home / 38,853.39-53,617.60-21,857.65

Finding the Fourth Proportional to 38,853.39, 53,617.60 and 21,857.65

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Solution

The fourth proportional to 38,853.39, 53,617.60 and 21,857.65 is: 30,163.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,853.39 : 53,617.60 = 21,857.65 : x
  2. Step 2: Convert to fraction form
    38,853.39/53,617.60 = 21,857.65/x
  3. Step 3: Cross multiply
    38,853.39x = 53,617.60 × 21,857.65
  4. Step 4: Simplify right side
    38,853.39x = 1,171,954,357.26
  5. Step 5: Solve for x
    x = 1,171,954,357.26/38,853.39
  6. Step 6: Final answer
    x = 30,163.50

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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.