Home / 25,776.18-38,839.86-21,198.71

Finding the Fourth Proportional to 25,776.18, 38,839.86 and 21,198.71

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Solution

The fourth proportional to 25,776.18, 38,839.86 and 21,198.71 is: 31,942.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,776.18 : 38,839.86 = 21,198.71 : x
  2. Step 2: Convert to fraction form
    25,776.18/38,839.86 = 21,198.71/x
  3. Step 3: Cross multiply
    25,776.18x = 38,839.86 × 21,198.71
  4. Step 4: Simplify right side
    25,776.18x = 823,355,025.68
  5. Step 5: Solve for x
    x = 823,355,025.68/25,776.18
  6. Step 6: Final answer
    x = 31,942.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.