Home / 13,191.72-19,785.90-3,704.89

Finding the Fourth Proportional to 13,191.72, 19,785.90 and 3,704.89

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Solution

The fourth proportional to 13,191.72, 19,785.90 and 3,704.89 is: 5,556.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.72 : 19,785.90 = 3,704.89 : x
  2. Step 2: Convert to fraction form
    13,191.72/19,785.90 = 3,704.89/x
  3. Step 3: Cross multiply
    13,191.72x = 19,785.90 × 3,704.89
  4. Step 4: Simplify right side
    13,191.72x = 73,304,583.05
  5. Step 5: Solve for x
    x = 73,304,583.05/13,191.72
  6. Step 6: Final answer
    x = 5,556.86

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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.