Home / 20,829.51-31,247.51-6,786.27

Finding the Fourth Proportional to 20,829.51, 31,247.51 and 6,786.27

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Solution

The fourth proportional to 20,829.51, 31,247.51 and 6,786.27 is: 10,180.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.51 : 31,247.51 = 6,786.27 : x
  2. Step 2: Convert to fraction form
    20,829.51/31,247.51 = 6,786.27/x
  3. Step 3: Cross multiply
    20,829.51x = 31,247.51 × 6,786.27
  4. Step 4: Simplify right side
    20,829.51x = 212,053,968.97
  5. Step 5: Solve for x
    x = 212,053,968.97/20,829.51
  6. Step 6: Final answer
    x = 10,180.46

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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.