Home / 20,668.22-31,007.40-6,628.29

Finding the Fourth Proportional to 20,668.22, 31,007.40 and 6,628.29

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Solution

The fourth proportional to 20,668.22, 31,007.40 and 6,628.29 is: 9,944.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.22 : 31,007.40 = 6,628.29 : x
  2. Step 2: Convert to fraction form
    20,668.22/31,007.40 = 6,628.29/x
  3. Step 3: Cross multiply
    20,668.22x = 31,007.40 × 6,628.29
  4. Step 4: Simplify right side
    20,668.22x = 205,526,014.49
  5. Step 5: Solve for x
    x = 205,526,014.49/20,668.22
  6. Step 6: Final answer
    x = 9,944.06

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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.