Home / 28,074.52-42,121.50-18,751.96

Finding the Fourth Proportional to 28,074.52, 42,121.50 and 18,751.96

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Solution

The fourth proportional to 28,074.52, 42,121.50 and 18,751.96 is: 28,134.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,074.52 : 42,121.50 = 18,751.96 : x
  2. Step 2: Convert to fraction form
    28,074.52/42,121.50 = 18,751.96/x
  3. Step 3: Cross multiply
    28,074.52x = 42,121.50 × 18,751.96
  4. Step 4: Simplify right side
    28,074.52x = 789,860,683.14
  5. Step 5: Solve for x
    x = 789,860,683.14/28,074.52
  6. Step 6: Final answer
    x = 28,134.43

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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.