Home / 12,608.97-18,915.71-4,288.56

Finding the Fourth Proportional to 12,608.97, 18,915.71 and 4,288.56

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Solution

The fourth proportional to 12,608.97, 18,915.71 and 4,288.56 is: 6,433.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,608.97 : 18,915.71 = 4,288.56 : x
  2. Step 2: Convert to fraction form
    12,608.97/18,915.71 = 4,288.56/x
  3. Step 3: Cross multiply
    12,608.97x = 18,915.71 × 4,288.56
  4. Step 4: Simplify right side
    12,608.97x = 81,121,157.28
  5. Step 5: Solve for x
    x = 81,121,157.28/12,608.97
  6. Step 6: Final answer
    x = 6,433.61

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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.