Home / 19,940.11-29,923.97-7,931.03

Finding the Fourth Proportional to 19,940.11, 29,923.97 and 7,931.03

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Solution

The fourth proportional to 19,940.11, 29,923.97 and 7,931.03 is: 11,902.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.11 : 29,923.97 = 7,931.03 : x
  2. Step 2: Convert to fraction form
    19,940.11/29,923.97 = 7,931.03/x
  3. Step 3: Cross multiply
    19,940.11x = 29,923.97 × 7,931.03
  4. Step 4: Simplify right side
    19,940.11x = 237,327,903.79
  5. Step 5: Solve for x
    x = 237,327,903.79/19,940.11
  6. Step 6: Final answer
    x = 11,902.04

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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.