Home / 28,431.24-39,193.57-19,906.49

Finding the Fourth Proportional to 28,431.24, 39,193.57 and 19,906.49

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Solution

The fourth proportional to 28,431.24, 39,193.57 and 19,906.49 is: 27,441.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.24 : 39,193.57 = 19,906.49 : x
  2. Step 2: Convert to fraction form
    28,431.24/39,193.57 = 19,906.49/x
  3. Step 3: Cross multiply
    28,431.24x = 39,193.57 × 19,906.49
  4. Step 4: Simplify right side
    28,431.24x = 780,206,532.14
  5. Step 5: Solve for x
    x = 780,206,532.14/28,431.24
  6. Step 6: Final answer
    x = 27,441.88

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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.