Home / 11,311.89-16,968.54-3,915.36

Finding the Fourth Proportional to 11,311.89, 16,968.54 and 3,915.36

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Solution

The fourth proportional to 11,311.89, 16,968.54 and 3,915.36 is: 5,873.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,311.89 : 16,968.54 = 3,915.36 : x
  2. Step 2: Convert to fraction form
    11,311.89/16,968.54 = 3,915.36/x
  3. Step 3: Cross multiply
    11,311.89x = 16,968.54 × 3,915.36
  4. Step 4: Simplify right side
    11,311.89x = 66,437,942.77
  5. Step 5: Solve for x
    x = 66,437,942.77/11,311.89
  6. Step 6: Final answer
    x = 5,873.28

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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.