Home / 21,291.62-31,941.26-8,804.85

Finding the Fourth Proportional to 21,291.62, 31,941.26 and 8,804.85

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Solution

The fourth proportional to 21,291.62, 31,941.26 and 8,804.85 is: 13,208.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.62 : 31,941.26 = 8,804.85 : x
  2. Step 2: Convert to fraction form
    21,291.62/31,941.26 = 8,804.85/x
  3. Step 3: Cross multiply
    21,291.62x = 31,941.26 × 8,804.85
  4. Step 4: Simplify right side
    21,291.62x = 281,237,959.09
  5. Step 5: Solve for x
    x = 281,237,959.09/21,291.62
  6. Step 6: Final answer
    x = 13,208.86

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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.