Home / 20,668.63-31,002.67-5,086.39

Finding the Fourth Proportional to 20,668.63, 31,002.67 and 5,086.39

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Solution

The fourth proportional to 20,668.63, 31,002.67 and 5,086.39 is: 7,629.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.63 : 31,002.67 = 5,086.39 : x
  2. Step 2: Convert to fraction form
    20,668.63/31,002.67 = 5,086.39/x
  3. Step 3: Cross multiply
    20,668.63x = 31,002.67 × 5,086.39
  4. Step 4: Simplify right side
    20,668.63x = 157,691,670.66
  5. Step 5: Solve for x
    x = 157,691,670.66/20,668.63
  6. Step 6: Final answer
    x = 7,629.52

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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.