Home / 20,990.50-31,476.26-6,194.22

Finding the Fourth Proportional to 20,990.50, 31,476.26 and 6,194.22

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Solution

The fourth proportional to 20,990.50, 31,476.26 and 6,194.22 is: 9,288.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,990.50 : 31,476.26 = 6,194.22 : x
  2. Step 2: Convert to fraction form
    20,990.50/31,476.26 = 6,194.22/x
  3. Step 3: Cross multiply
    20,990.50x = 31,476.26 × 6,194.22
  4. Step 4: Simplify right side
    20,990.50x = 194,970,879.22
  5. Step 5: Solve for x
    x = 194,970,879.22/20,990.50
  6. Step 6: Final answer
    x = 9,288.53

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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.