Home / 10,489.14-15,736.44-3,915.38

Finding the Fourth Proportional to 10,489.14, 15,736.44 and 3,915.38

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Solution

The fourth proportional to 10,489.14, 15,736.44 and 3,915.38 is: 5,874.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,489.14 : 15,736.44 = 3,915.38 : x
  2. Step 2: Convert to fraction form
    10,489.14/15,736.44 = 3,915.38/x
  3. Step 3: Cross multiply
    10,489.14x = 15,736.44 × 3,915.38
  4. Step 4: Simplify right side
    10,489.14x = 61,614,142.45
  5. Step 5: Solve for x
    x = 61,614,142.45/10,489.14
  6. Step 6: Final answer
    x = 5,874.09

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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.