Home / 12,711.36-19,069.20-3,946.80

Finding the Fourth Proportional to 12,711.36, 19,069.20 and 3,946.80

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Solution

The fourth proportional to 12,711.36, 19,069.20 and 3,946.80 is: 5,920.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.36 : 19,069.20 = 3,946.80 : x
  2. Step 2: Convert to fraction form
    12,711.36/19,069.20 = 3,946.80/x
  3. Step 3: Cross multiply
    12,711.36x = 19,069.20 × 3,946.80
  4. Step 4: Simplify right side
    12,711.36x = 75,262,318.56
  5. Step 5: Solve for x
    x = 75,262,318.56/12,711.36
  6. Step 6: Final answer
    x = 5,920.87

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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.