Home / 28,136.36-42,183.58-9,405.31

Finding the Fourth Proportional to 28,136.36, 42,183.58 and 9,405.31

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Solution

The fourth proportional to 28,136.36, 42,183.58 and 9,405.31 is: 14,100.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.36 : 42,183.58 = 9,405.31 : x
  2. Step 2: Convert to fraction form
    28,136.36/42,183.58 = 9,405.31/x
  3. Step 3: Cross multiply
    28,136.36x = 42,183.58 × 9,405.31
  4. Step 4: Simplify right side
    28,136.36x = 396,749,599.78
  5. Step 5: Solve for x
    x = 396,749,599.78/28,136.36
  6. Step 6: Final answer
    x = 14,100.96

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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.