Home / 18,817.75-28,226.64-4,778.83

Finding the Fourth Proportional to 18,817.75, 28,226.64 and 4,778.83

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Solution

The fourth proportional to 18,817.75, 28,226.64 and 4,778.83 is: 7,168.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.75 : 28,226.64 = 4,778.83 : x
  2. Step 2: Convert to fraction form
    18,817.75/28,226.64 = 4,778.83/x
  3. Step 3: Cross multiply
    18,817.75x = 28,226.64 × 4,778.83
  4. Step 4: Simplify right side
    18,817.75x = 134,890,314.03
  5. Step 5: Solve for x
    x = 134,890,314.03/18,817.75
  6. Step 6: Final answer
    x = 7,168.25

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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.