Home / 12,857.97-19,287.21-4,537.82

Finding the Fourth Proportional to 12,857.97, 19,287.21 and 4,537.82

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Solution

The fourth proportional to 12,857.97, 19,287.21 and 4,537.82 is: 6,806.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.97 : 19,287.21 = 4,537.82 : x
  2. Step 2: Convert to fraction form
    12,857.97/19,287.21 = 4,537.82/x
  3. Step 3: Cross multiply
    12,857.97x = 19,287.21 × 4,537.82
  4. Step 4: Simplify right side
    12,857.97x = 87,521,790.85
  5. Step 5: Solve for x
    x = 87,521,790.85/12,857.97
  6. Step 6: Final answer
    x = 6,806.81

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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.