Home / 12,807.91-19,209.70-3,571.75

Finding the Fourth Proportional to 12,807.91, 19,209.70 and 3,571.75

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Solution

The fourth proportional to 12,807.91, 19,209.70 and 3,571.75 is: 5,357.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.91 : 19,209.70 = 3,571.75 : x
  2. Step 2: Convert to fraction form
    12,807.91/19,209.70 = 3,571.75/x
  3. Step 3: Cross multiply
    12,807.91x = 19,209.70 × 3,571.75
  4. Step 4: Simplify right side
    12,807.91x = 68,612,245.98
  5. Step 5: Solve for x
    x = 68,612,245.98/12,807.91
  6. Step 6: Final answer
    x = 5,357.02

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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.