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Finding the Fourth Proportional to 30,392.96, 45,589.44 and 11,914.88

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Solution

The fourth proportional to 30,392.96, 45,589.44 and 11,914.88 is: 17,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,392.96 : 45,589.44 = 11,914.88 : x
  2. Step 2: Convert to fraction form
    30,392.96/45,589.44 = 11,914.88/x
  3. Step 3: Cross multiply
    30,392.96x = 45,589.44 × 11,914.88
  4. Step 4: Simplify right side
    30,392.96x = 543,192,706.87
  5. Step 5: Solve for x
    x = 543,192,706.87/30,392.96
  6. Step 6: Final answer
    x = 17,872.32

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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.