Home / 21,004.51-31,512.71-6,213.37

Finding the Fourth Proportional to 21,004.51, 31,512.71 and 6,213.37

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Solution

The fourth proportional to 21,004.51, 31,512.71 and 6,213.37 is: 9,321.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.51 : 31,512.71 = 6,213.37 : x
  2. Step 2: Convert to fraction form
    21,004.51/31,512.71 = 6,213.37/x
  3. Step 3: Cross multiply
    21,004.51x = 31,512.71 × 6,213.37
  4. Step 4: Simplify right side
    21,004.51x = 195,800,095.87
  5. Step 5: Solve for x
    x = 195,800,095.87/21,004.51
  6. Step 6: Final answer
    x = 9,321.81

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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.