Home / 13,240.20-19,860.27-3,379.47

Finding the Fourth Proportional to 13,240.20, 19,860.27 and 3,379.47

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Solution

The fourth proportional to 13,240.20, 19,860.27 and 3,379.47 is: 5,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.20 : 19,860.27 = 3,379.47 : x
  2. Step 2: Convert to fraction form
    13,240.20/19,860.27 = 3,379.47/x
  3. Step 3: Cross multiply
    13,240.20x = 19,860.27 × 3,379.47
  4. Step 4: Simplify right side
    13,240.20x = 67,117,295.59
  5. Step 5: Solve for x
    x = 67,117,295.59/13,240.20
  6. Step 6: Final answer
    x = 5,069.21

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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.