Home / 28,878.20-43,317.30-27,128.60

Finding the Fourth Proportional to 28,878.20, 43,317.30 and 27,128.60

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Solution

The fourth proportional to 28,878.20, 43,317.30 and 27,128.60 is: 40,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.20 : 43,317.30 = 27,128.60 : x
  2. Step 2: Convert to fraction form
    28,878.20/43,317.30 = 27,128.60/x
  3. Step 3: Cross multiply
    28,878.20x = 43,317.30 × 27,128.60
  4. Step 4: Simplify right side
    28,878.20x = 1,175,137,704.78
  5. Step 5: Solve for x
    x = 1,175,137,704.78/28,878.20
  6. Step 6: Final answer
    x = 40,692.90

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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.