Home / 28,870.35-43,311.60-9,150.90

Finding the Fourth Proportional to 28,870.35, 43,311.60 and 9,150.90

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Solution

The fourth proportional to 28,870.35, 43,311.60 and 9,150.90 is: 13,728.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870.35 : 43,311.60 = 9,150.90 : x
  2. Step 2: Convert to fraction form
    28,870.35/43,311.60 = 9,150.90/x
  3. Step 3: Cross multiply
    28,870.35x = 43,311.60 × 9,150.90
  4. Step 4: Simplify right side
    28,870.35x = 396,340,120.44
  5. Step 5: Solve for x
    x = 396,340,120.44/28,870.35
  6. Step 6: Final answer
    x = 13,728.28

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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.