Home / 12,813.50-19,218.94-3,453.14

Finding the Fourth Proportional to 12,813.50, 19,218.94 and 3,453.14

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Solution

The fourth proportional to 12,813.50, 19,218.94 and 3,453.14 is: 5,179.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.50 : 19,218.94 = 3,453.14 : x
  2. Step 2: Convert to fraction form
    12,813.50/19,218.94 = 3,453.14/x
  3. Step 3: Cross multiply
    12,813.50x = 19,218.94 × 3,453.14
  4. Step 4: Simplify right side
    12,813.50x = 66,365,690.47
  5. Step 5: Solve for x
    x = 66,365,690.47/12,813.50
  6. Step 6: Final answer
    x = 5,179.36

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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.