Home / 20,621.88-30,928.94-5,830.68

Finding the Fourth Proportional to 20,621.88, 30,928.94 and 5,830.68

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Solution

The fourth proportional to 20,621.88, 30,928.94 and 5,830.68 is: 8,744.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.88 : 30,928.94 = 5,830.68 : x
  2. Step 2: Convert to fraction form
    20,621.88/30,928.94 = 5,830.68/x
  3. Step 3: Cross multiply
    20,621.88x = 30,928.94 × 5,830.68
  4. Step 4: Simplify right side
    20,621.88x = 180,336,722.73
  5. Step 5: Solve for x
    x = 180,336,722.73/20,621.88
  6. Step 6: Final answer
    x = 8,744.92

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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.