Home / 20,986.44-31,480.89-5,992.41

Finding the Fourth Proportional to 20,986.44, 31,480.89 and 5,992.41

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Solution

The fourth proportional to 20,986.44, 31,480.89 and 5,992.41 is: 8,988.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.44 : 31,480.89 = 5,992.41 : x
  2. Step 2: Convert to fraction form
    20,986.44/31,480.89 = 5,992.41/x
  3. Step 3: Cross multiply
    20,986.44x = 31,480.89 × 5,992.41
  4. Step 4: Simplify right side
    20,986.44x = 188,646,369.11
  5. Step 5: Solve for x
    x = 188,646,369.11/20,986.44
  6. Step 6: Final answer
    x = 8,988.96

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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.