Home / 21,021.44-31,536.72-6,229.28

Finding the Fourth Proportional to 21,021.44, 31,536.72 and 6,229.28

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Solution

The fourth proportional to 21,021.44, 31,536.72 and 6,229.28 is: 9,345.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.44 : 31,536.72 = 6,229.28 : x
  2. Step 2: Convert to fraction form
    21,021.44/31,536.72 = 6,229.28/x
  3. Step 3: Cross multiply
    21,021.44x = 31,536.72 × 6,229.28
  4. Step 4: Simplify right side
    21,021.44x = 196,451,059.16
  5. Step 5: Solve for x
    x = 196,451,059.16/21,021.44
  6. Step 6: Final answer
    x = 9,345.27

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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.