Home / 13,240.57-19,860.84-3,379.85

Finding the Fourth Proportional to 13,240.57, 19,860.84 and 3,379.85

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Solution

The fourth proportional to 13,240.57, 19,860.84 and 3,379.85 is: 5,069.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.57 : 19,860.84 = 3,379.85 : x
  2. Step 2: Convert to fraction form
    13,240.57/19,860.84 = 3,379.85/x
  3. Step 3: Cross multiply
    13,240.57x = 19,860.84 × 3,379.85
  4. Step 4: Simplify right side
    13,240.57x = 67,126,651.62
  5. Step 5: Solve for x
    x = 67,126,651.62/13,240.57
  6. Step 6: Final answer
    x = 5,069.77

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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.