Home / 20,704.07-31,055.73-5,121.69

Finding the Fourth Proportional to 20,704.07, 31,055.73 and 5,121.69

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Solution

The fourth proportional to 20,704.07, 31,055.73 and 5,121.69 is: 7,682.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.07 : 31,055.73 = 5,121.69 : x
  2. Step 2: Convert to fraction form
    20,704.07/31,055.73 = 5,121.69/x
  3. Step 3: Cross multiply
    20,704.07x = 31,055.73 × 5,121.69
  4. Step 4: Simplify right side
    20,704.07x = 159,057,821.78
  5. Step 5: Solve for x
    x = 159,057,821.78/20,704.07
  6. Step 6: Final answer
    x = 7,682.44

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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.