Home / 13,704.67-18,912.31-7,736.21

Finding the Fourth Proportional to 13,704.67, 18,912.31 and 7,736.21

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Solution

The fourth proportional to 13,704.67, 18,912.31 and 7,736.21 is: 10,675.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.67 : 18,912.31 = 7,736.21 : x
  2. Step 2: Convert to fraction form
    13,704.67/18,912.31 = 7,736.21/x
  3. Step 3: Cross multiply
    13,704.67x = 18,912.31 × 7,736.21
  4. Step 4: Simplify right side
    13,704.67x = 146,309,580.52
  5. Step 5: Solve for x
    x = 146,309,580.52/13,704.67
  6. Step 6: Final answer
    x = 10,675.89

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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.