Home / 21,112.28-31,668.48-6,321.27

Finding the Fourth Proportional to 21,112.28, 31,668.48 and 6,321.27

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Solution

The fourth proportional to 21,112.28, 31,668.48 and 6,321.27 is: 9,481.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.28 : 31,668.48 = 6,321.27 : x
  2. Step 2: Convert to fraction form
    21,112.28/31,668.48 = 6,321.27/x
  3. Step 3: Cross multiply
    21,112.28x = 31,668.48 × 6,321.27
  4. Step 4: Simplify right side
    21,112.28x = 200,185,012.57
  5. Step 5: Solve for x
    x = 200,185,012.57/21,112.28
  6. Step 6: Final answer
    x = 9,481.93

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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.