Home / 12,121.32-18,181.97-3,801.97

Finding the Fourth Proportional to 12,121.32, 18,181.97 and 3,801.97

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Solution

The fourth proportional to 12,121.32, 18,181.97 and 3,801.97 is: 5,702.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.32 : 18,181.97 = 3,801.97 : x
  2. Step 2: Convert to fraction form
    12,121.32/18,181.97 = 3,801.97/x
  3. Step 3: Cross multiply
    12,121.32x = 18,181.97 × 3,801.97
  4. Step 4: Simplify right side
    12,121.32x = 69,127,304.48
  5. Step 5: Solve for x
    x = 69,127,304.48/12,121.32
  6. Step 6: Final answer
    x = 5,702.95

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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.