Home / 12,311.87-18,474.62-7,634.39

Finding the Fourth Proportional to 12,311.87, 18,474.62 and 7,634.39

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Solution

The fourth proportional to 12,311.87, 18,474.62 and 7,634.39 is: 11,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.87 : 18,474.62 = 7,634.39 : x
  2. Step 2: Convert to fraction form
    12,311.87/18,474.62 = 7,634.39/x
  3. Step 3: Cross multiply
    12,311.87x = 18,474.62 × 7,634.39
  4. Step 4: Simplify right side
    12,311.87x = 141,042,323.64
  5. Step 5: Solve for x
    x = 141,042,323.64/12,311.87
  6. Step 6: Final answer
    x = 11,455.80

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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.