Home / 20,105.79-30,137.37-6,766.08

Finding the Fourth Proportional to 20,105.79, 30,137.37 and 6,766.08

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Solution

The fourth proportional to 20,105.79, 30,137.37 and 6,766.08 is: 10,141.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.79 : 30,137.37 = 6,766.08 : x
  2. Step 2: Convert to fraction form
    20,105.79/30,137.37 = 6,766.08/x
  3. Step 3: Cross multiply
    20,105.79x = 30,137.37 × 6,766.08
  4. Step 4: Simplify right side
    20,105.79x = 203,911,856.41
  5. Step 5: Solve for x
    x = 203,911,856.41/20,105.79
  6. Step 6: Final answer
    x = 10,141.95

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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.