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Finding the Fourth Proportional to 11,915.44, 17,873.16 and 4,989.94

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Solution

The fourth proportional to 11,915.44, 17,873.16 and 4,989.94 is: 7,484.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.44 : 17,873.16 = 4,989.94 : x
  2. Step 2: Convert to fraction form
    11,915.44/17,873.16 = 4,989.94/x
  3. Step 3: Cross multiply
    11,915.44x = 17,873.16 × 4,989.94
  4. Step 4: Simplify right side
    11,915.44x = 89,185,932.62
  5. Step 5: Solve for x
    x = 89,185,932.62/11,915.44
  6. Step 6: Final answer
    x = 7,484.91

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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.