Home / 20,668.15-31,002.36-6,630.31

Finding the Fourth Proportional to 20,668.15, 31,002.36 and 6,630.31

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Solution

The fourth proportional to 20,668.15, 31,002.36 and 6,630.31 is: 9,945.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.15 : 31,002.36 = 6,630.31 : x
  2. Step 2: Convert to fraction form
    20,668.15/31,002.36 = 6,630.31/x
  3. Step 3: Cross multiply
    20,668.15x = 31,002.36 × 6,630.31
  4. Step 4: Simplify right side
    20,668.15x = 205,555,257.53
  5. Step 5: Solve for x
    x = 205,555,257.53/20,668.15
  6. Step 6: Final answer
    x = 9,945.51

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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.