Home / 18,968.12-28,452.60-4,928.70

Finding the Fourth Proportional to 18,968.12, 28,452.60 and 4,928.70

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Solution

The fourth proportional to 18,968.12, 28,452.60 and 4,928.70 is: 7,393.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.12 : 28,452.60 = 4,928.70 : x
  2. Step 2: Convert to fraction form
    18,968.12/28,452.60 = 4,928.70/x
  3. Step 3: Cross multiply
    18,968.12x = 28,452.60 × 4,928.70
  4. Step 4: Simplify right side
    18,968.12x = 140,234,329.62
  5. Step 5: Solve for x
    x = 140,234,329.62/18,968.12
  6. Step 6: Final answer
    x = 7,393.16

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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.