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Finding the Fourth Proportional to 12,674.88, 18,999.36 and 4,880.64

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Solution

The fourth proportional to 12,674.88, 18,999.36 and 4,880.64 is: 7,315.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,674.88 : 18,999.36 = 4,880.64 : x
  2. Step 2: Convert to fraction form
    12,674.88/18,999.36 = 4,880.64/x
  3. Step 3: Cross multiply
    12,674.88x = 18,999.36 × 4,880.64
  4. Step 4: Simplify right side
    12,674.88x = 92,729,036.39
  5. Step 5: Solve for x
    x = 92,729,036.39/12,674.88
  6. Step 6: Final answer
    x = 7,315.97

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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.