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Finding the Fourth Proportional to 12,672.08, 18,993.96 and 5,274.08

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Solution

The fourth proportional to 12,672.08, 18,993.96 and 5,274.08 is: 7,905.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.08 : 18,993.96 = 5,274.08 : x
  2. Step 2: Convert to fraction form
    12,672.08/18,993.96 = 5,274.08/x
  3. Step 3: Cross multiply
    12,672.08x = 18,993.96 × 5,274.08
  4. Step 4: Simplify right side
    12,672.08x = 100,175,664.56
  5. Step 5: Solve for x
    x = 100,175,664.56/12,672.08
  6. Step 6: Final answer
    x = 7,905.23

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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.