Home / 28,393.73-39,183.60-15,647.37

Finding the Fourth Proportional to 28,393.73, 39,183.60 and 15,647.37

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Solution

The fourth proportional to 28,393.73, 39,183.60 and 15,647.37 is: 21,593.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,393.73 : 39,183.60 = 15,647.37 : x
  2. Step 2: Convert to fraction form
    28,393.73/39,183.60 = 15,647.37/x
  3. Step 3: Cross multiply
    28,393.73x = 39,183.60 × 15,647.37
  4. Step 4: Simplify right side
    28,393.73x = 613,120,140.19
  5. Step 5: Solve for x
    x = 613,120,140.19/28,393.73
  6. Step 6: Final answer
    x = 21,593.51

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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.