Home / 12,172.26-18,245.28-5,150.64

Finding the Fourth Proportional to 12,172.26, 18,245.28 and 5,150.64

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Solution

The fourth proportional to 12,172.26, 18,245.28 and 5,150.64 is: 7,720.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.26 : 18,245.28 = 5,150.64 : x
  2. Step 2: Convert to fraction form
    12,172.26/18,245.28 = 5,150.64/x
  3. Step 3: Cross multiply
    12,172.26x = 18,245.28 × 5,150.64
  4. Step 4: Simplify right side
    12,172.26x = 93,974,868.98
  5. Step 5: Solve for x
    x = 93,974,868.98/12,172.26
  6. Step 6: Final answer
    x = 7,720.41

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1.5x scale

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.