Home / 20,820.93-31,233.27-6,777.31

Finding the Fourth Proportional to 20,820.93, 31,233.27 and 6,777.31

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Solution

The fourth proportional to 20,820.93, 31,233.27 and 6,777.31 is: 10,166.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820.93 : 31,233.27 = 6,777.31 : x
  2. Step 2: Convert to fraction form
    20,820.93/31,233.27 = 6,777.31/x
  3. Step 3: Cross multiply
    20,820.93x = 31,233.27 × 6,777.31
  4. Step 4: Simplify right side
    20,820.93x = 211,677,536.16
  5. Step 5: Solve for x
    x = 211,677,536.16/20,820.93
  6. Step 6: Final answer
    x = 10,166.58

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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.