Home / 12,687.72-19,033.40-3,923.38

Finding the Fourth Proportional to 12,687.72, 19,033.40 and 3,923.38

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Solution

The fourth proportional to 12,687.72, 19,033.40 and 3,923.38 is: 5,885.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.72 : 19,033.40 = 3,923.38 : x
  2. Step 2: Convert to fraction form
    12,687.72/19,033.40 = 3,923.38/x
  3. Step 3: Cross multiply
    12,687.72x = 19,033.40 × 3,923.38
  4. Step 4: Simplify right side
    12,687.72x = 74,675,260.89
  5. Step 5: Solve for x
    x = 74,675,260.89/12,687.72
  6. Step 6: Final answer
    x = 5,885.63

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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.