Home / 20,988.27-31,485.82-6,198.68

Finding the Fourth Proportional to 20,988.27, 31,485.82 and 6,198.68

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Solution

The fourth proportional to 20,988.27, 31,485.82 and 6,198.68 is: 9,299.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.27 : 31,485.82 = 6,198.68 : x
  2. Step 2: Convert to fraction form
    20,988.27/31,485.82 = 6,198.68/x
  3. Step 3: Cross multiply
    20,988.27x = 31,485.82 × 6,198.68
  4. Step 4: Simplify right side
    20,988.27x = 195,170,522.72
  5. Step 5: Solve for x
    x = 195,170,522.72/20,988.27
  6. Step 6: Final answer
    x = 9,299.03

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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.