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Finding the Fourth Proportional to 11,951.58, 17,915.13 and 4,156.14

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Solution

The fourth proportional to 11,951.58, 17,915.13 and 4,156.14 is: 6,229.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,951.58 : 17,915.13 = 4,156.14 : x
  2. Step 2: Convert to fraction form
    11,951.58/17,915.13 = 4,156.14/x
  3. Step 3: Cross multiply
    11,951.58x = 17,915.13 × 4,156.14
  4. Step 4: Simplify right side
    11,951.58x = 74,457,788.40
  5. Step 5: Solve for x
    x = 74,457,788.40/11,951.58
  6. Step 6: Final answer
    x = 6,229.95

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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.