Home / 20,820.54-31,223.98-6,777.27

Finding the Fourth Proportional to 20,820.54, 31,223.98 and 6,777.27

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Solution

The fourth proportional to 20,820.54, 31,223.98 and 6,777.27 is: 10,163.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820.54 : 31,223.98 = 6,777.27 : x
  2. Step 2: Convert to fraction form
    20,820.54/31,223.98 = 6,777.27/x
  3. Step 3: Cross multiply
    20,820.54x = 31,223.98 × 6,777.27
  4. Step 4: Simplify right side
    20,820.54x = 211,613,351.41
  5. Step 5: Solve for x
    x = 211,613,351.41/20,820.54
  6. Step 6: Final answer
    x = 10,163.68

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1.5x scale

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.