Home / 12,471.82-18,707.73-8,319.94

Finding the Fourth Proportional to 12,471.82, 18,707.73 and 8,319.94

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Solution

The fourth proportional to 12,471.82, 18,707.73 and 8,319.94 is: 12,479.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.82 : 18,707.73 = 8,319.94 : x
  2. Step 2: Convert to fraction form
    12,471.82/18,707.73 = 8,319.94/x
  3. Step 3: Cross multiply
    12,471.82x = 18,707.73 × 8,319.94
  4. Step 4: Simplify right side
    12,471.82x = 155,647,076.80
  5. Step 5: Solve for x
    x = 155,647,076.80/12,471.82
  6. Step 6: Final answer
    x = 12,479.91

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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.