Home / 11,942.19-16,487.42-7,912.43

Finding the Fourth Proportional to 11,942.19, 16,487.42 and 7,912.43

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Solution

The fourth proportional to 11,942.19, 16,487.42 and 7,912.43 is: 10,923.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,942.19 : 16,487.42 = 7,912.43 : x
  2. Step 2: Convert to fraction form
    11,942.19/16,487.42 = 7,912.43/x
  3. Step 3: Cross multiply
    11,942.19x = 16,487.42 × 7,912.43
  4. Step 4: Simplify right side
    11,942.19x = 130,455,434.63
  5. Step 5: Solve for x
    x = 130,455,434.63/11,942.19
  6. Step 6: Final answer
    x = 10,923.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.