Home / 12,480.05-18,701.58-5,453.57

Finding the Fourth Proportional to 12,480.05, 18,701.58 and 5,453.57

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Solution

The fourth proportional to 12,480.05, 18,701.58 and 5,453.57 is: 8,172.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.05 : 18,701.58 = 5,453.57 : x
  2. Step 2: Convert to fraction form
    12,480.05/18,701.58 = 5,453.57/x
  3. Step 3: Cross multiply
    12,480.05x = 18,701.58 × 5,453.57
  4. Step 4: Simplify right side
    12,480.05x = 101,990,375.64
  5. Step 5: Solve for x
    x = 101,990,375.64/12,480.05
  6. Step 6: Final answer
    x = 8,172.27

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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.