Home / 13,240.27-19,860.38-3,379.55

Finding the Fourth Proportional to 13,240.27, 19,860.38 and 3,379.55

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Solution

The fourth proportional to 13,240.27, 19,860.38 and 3,379.55 is: 5,069.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.27 : 19,860.38 = 3,379.55 : x
  2. Step 2: Convert to fraction form
    13,240.27/19,860.38 = 3,379.55/x
  3. Step 3: Cross multiply
    13,240.27x = 19,860.38 × 3,379.55
  4. Step 4: Simplify right side
    13,240.27x = 67,119,050.04
  5. Step 5: Solve for x
    x = 67,119,050.04/13,240.27
  6. Step 6: Final answer
    x = 5,069.31

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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.