Home / 12,936.21-19,403.92-3,576.80

Finding the Fourth Proportional to 12,936.21, 19,403.92 and 3,576.80

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Solution

The fourth proportional to 12,936.21, 19,403.92 and 3,576.80 is: 5,365.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.21 : 19,403.92 = 3,576.80 : x
  2. Step 2: Convert to fraction form
    12,936.21/19,403.92 = 3,576.80/x
  3. Step 3: Cross multiply
    12,936.21x = 19,403.92 × 3,576.80
  4. Step 4: Simplify right side
    12,936.21x = 69,403,826.15
  5. Step 5: Solve for x
    x = 69,403,826.15/12,936.21
  6. Step 6: Final answer
    x = 5,365.08

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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.