Home / 13,238.20-19,839.30-6,668.92

Finding the Fourth Proportional to 13,238.20, 19,839.30 and 6,668.92

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Solution

The fourth proportional to 13,238.20, 19,839.30 and 6,668.92 is: 9,994.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.20 : 19,839.30 = 6,668.92 : x
  2. Step 2: Convert to fraction form
    13,238.20/19,839.30 = 6,668.92/x
  3. Step 3: Cross multiply
    13,238.20x = 19,839.30 × 6,668.92
  4. Step 4: Simplify right side
    13,238.20x = 132,306,704.56
  5. Step 5: Solve for x
    x = 132,306,704.56/13,238.20
  6. Step 6: Final answer
    x = 9,994.31

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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.