Home / 25,247.78-37,920.88-20,571.25

Finding the Fourth Proportional to 25,247.78, 37,920.88 and 20,571.25

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Solution

The fourth proportional to 25,247.78, 37,920.88 and 20,571.25 is: 30,896.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,247.78 : 37,920.88 = 20,571.25 : x
  2. Step 2: Convert to fraction form
    25,247.78/37,920.88 = 20,571.25/x
  3. Step 3: Cross multiply
    25,247.78x = 37,920.88 × 20,571.25
  4. Step 4: Simplify right side
    25,247.78x = 780,079,902.70
  5. Step 5: Solve for x
    x = 780,079,902.70/25,247.78
  6. Step 6: Final answer
    x = 30,896.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.