Home / 38,850.45-53,618.36-21,855.40

Finding the Fourth Proportional to 38,850.45, 53,618.36 and 21,855.40

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Solution

The fourth proportional to 38,850.45, 53,618.36 and 21,855.40 is: 30,163.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,850.45 : 53,618.36 = 21,855.40 : x
  2. Step 2: Convert to fraction form
    38,850.45/53,618.36 = 21,855.40/x
  3. Step 3: Cross multiply
    38,850.45x = 53,618.36 × 21,855.40
  4. Step 4: Simplify right side
    38,850.45x = 1,171,850,705.14
  5. Step 5: Solve for x
    x = 1,171,850,705.14/38,850.45
  6. Step 6: Final answer
    x = 30,163.12

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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.