Home / 11,915.46-17,858.61-4,115.16

Finding the Fourth Proportional to 11,915.46, 17,858.61 and 4,115.16

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Solution

The fourth proportional to 11,915.46, 17,858.61 and 4,115.16 is: 6,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.46 : 17,858.61 = 4,115.16 : x
  2. Step 2: Convert to fraction form
    11,915.46/17,858.61 = 4,115.16/x
  3. Step 3: Cross multiply
    11,915.46x = 17,858.61 × 4,115.16
  4. Step 4: Simplify right side
    11,915.46x = 73,491,037.53
  5. Step 5: Solve for x
    x = 73,491,037.53/11,915.46
  6. Step 6: Final answer
    x = 6,167.70

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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.