Home / 13,240.35-19,860.51-3,379.63

Finding the Fourth Proportional to 13,240.35, 19,860.51 and 3,379.63

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Solution

The fourth proportional to 13,240.35, 19,860.51 and 3,379.63 is: 5,069.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.35 : 19,860.51 = 3,379.63 : x
  2. Step 2: Convert to fraction form
    13,240.35/19,860.51 = 3,379.63/x
  3. Step 3: Cross multiply
    13,240.35x = 19,860.51 × 3,379.63
  4. Step 4: Simplify right side
    13,240.35x = 67,121,175.41
  5. Step 5: Solve for x
    x = 67,121,175.41/13,240.35
  6. Step 6: Final answer
    x = 5,069.44

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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.