Home / 26,915.09-40,372.67-12,121.25

Finding the Fourth Proportional to 26,915.09, 40,372.67 and 12,121.25

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Solution

The fourth proportional to 26,915.09, 40,372.67 and 12,121.25 is: 18,181.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,915.09 : 40,372.67 = 12,121.25 : x
  2. Step 2: Convert to fraction form
    26,915.09/40,372.67 = 12,121.25/x
  3. Step 3: Cross multiply
    26,915.09x = 40,372.67 × 12,121.25
  4. Step 4: Simplify right side
    26,915.09x = 489,366,963.77
  5. Step 5: Solve for x
    x = 489,366,963.77/26,915.09
  6. Step 6: Final answer
    x = 18,181.88

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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.