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Finding the Fourth Proportional to 12,228.62, 18,342.94 and 5,653.58

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Solution

The fourth proportional to 12,228.62, 18,342.94 and 5,653.58 is: 8,480.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.62 : 18,342.94 = 5,653.58 : x
  2. Step 2: Convert to fraction form
    12,228.62/18,342.94 = 5,653.58/x
  3. Step 3: Cross multiply
    12,228.62x = 18,342.94 × 5,653.58
  4. Step 4: Simplify right side
    12,228.62x = 103,703,278.73
  5. Step 5: Solve for x
    x = 103,703,278.73/12,228.62
  6. Step 6: Final answer
    x = 8,480.37

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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.