Home / 12,811.28-19,216.23-3,926.60

Finding the Fourth Proportional to 12,811.28, 19,216.23 and 3,926.60

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Solution

The fourth proportional to 12,811.28, 19,216.23 and 3,926.60 is: 5,889.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.28 : 19,216.23 = 3,926.60 : x
  2. Step 2: Convert to fraction form
    12,811.28/19,216.23 = 3,926.60/x
  3. Step 3: Cross multiply
    12,811.28x = 19,216.23 × 3,926.60
  4. Step 4: Simplify right side
    12,811.28x = 75,454,448.72
  5. Step 5: Solve for x
    x = 75,454,448.72/12,811.28
  6. Step 6: Final answer
    x = 5,889.69

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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.