Home / 13,619.80-18,794.62-7,651.72

Finding the Fourth Proportional to 13,619.80, 18,794.62 and 7,651.72

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Solution

The fourth proportional to 13,619.80, 18,794.62 and 7,651.72 is: 10,558.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.80 : 18,794.62 = 7,651.72 : x
  2. Step 2: Convert to fraction form
    13,619.80/18,794.62 = 7,651.72/x
  3. Step 3: Cross multiply
    13,619.80x = 18,794.62 × 7,651.72
  4. Step 4: Simplify right side
    13,619.80x = 143,811,169.75
  5. Step 5: Solve for x
    x = 143,811,169.75/13,619.80
  6. Step 6: Final answer
    x = 10,558.98

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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.