Home / 38,853.14-53,616.13-21,858.32

Finding the Fourth Proportional to 38,853.14, 53,616.13 and 21,858.32

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Solution

The fourth proportional to 38,853.14, 53,616.13 and 21,858.32 is: 30,163.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,853.14 : 53,616.13 = 21,858.32 : x
  2. Step 2: Convert to fraction form
    38,853.14/53,616.13 = 21,858.32/x
  3. Step 3: Cross multiply
    38,853.14x = 53,616.13 × 21,858.32
  4. Step 4: Simplify right side
    38,853.14x = 1,171,958,606.10
  5. Step 5: Solve for x
    x = 1,171,958,606.10/38,853.14
  6. Step 6: Final answer
    x = 30,163.81

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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.