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Finding the Fourth Proportional to 12,531.62, 18,797.94 and 7,020.09

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Solution

The fourth proportional to 12,531.62, 18,797.94 and 7,020.09 is: 10,530.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.62 : 18,797.94 = 7,020.09 : x
  2. Step 2: Convert to fraction form
    12,531.62/18,797.94 = 7,020.09/x
  3. Step 3: Cross multiply
    12,531.62x = 18,797.94 × 7,020.09
  4. Step 4: Simplify right side
    12,531.62x = 131,963,230.61
  5. Step 5: Solve for x
    x = 131,963,230.61/12,531.62
  6. Step 6: Final answer
    x = 10,530.42

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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.