Home / 13,455.20-20,183.61-5,136.01

Finding the Fourth Proportional to 13,455.20, 20,183.61 and 5,136.01

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Solution

The fourth proportional to 13,455.20, 20,183.61 and 5,136.01 is: 7,704.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.20 : 20,183.61 = 5,136.01 : x
  2. Step 2: Convert to fraction form
    13,455.20/20,183.61 = 5,136.01/x
  3. Step 3: Cross multiply
    13,455.20x = 20,183.61 × 5,136.01
  4. Step 4: Simplify right side
    13,455.20x = 103,663,222.80
  5. Step 5: Solve for x
    x = 103,663,222.80/13,455.20
  6. Step 6: Final answer
    x = 7,704.32

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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.