Home / 25,974.27-38,961.41-20,812.95

Finding the Fourth Proportional to 25,974.27, 38,961.41 and 20,812.95

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Solution

The fourth proportional to 25,974.27, 38,961.41 and 20,812.95 is: 31,219.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,974.27 : 38,961.41 = 20,812.95 : x
  2. Step 2: Convert to fraction form
    25,974.27/38,961.41 = 20,812.95/x
  3. Step 3: Cross multiply
    25,974.27x = 38,961.41 × 20,812.95
  4. Step 4: Simplify right side
    25,974.27x = 810,901,774.19
  5. Step 5: Solve for x
    x = 810,901,774.19/25,974.27
  6. Step 6: Final answer
    x = 31,219.43

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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.