Home / 20,974.78-31,467.62-7,827.25

Finding the Fourth Proportional to 20,974.78, 31,467.62 and 7,827.25

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Solution

The fourth proportional to 20,974.78, 31,467.62 and 7,827.25 is: 11,742.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.78 : 31,467.62 = 7,827.25 : x
  2. Step 2: Convert to fraction form
    20,974.78/31,467.62 = 7,827.25/x
  3. Step 3: Cross multiply
    20,974.78x = 31,467.62 × 7,827.25
  4. Step 4: Simplify right side
    20,974.78x = 246,304,928.65
  5. Step 5: Solve for x
    x = 246,304,928.65/20,974.78
  6. Step 6: Final answer
    x = 11,742.91

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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.