Home / 20,684.80-31,028.76-6,451.48

Finding the Fourth Proportional to 20,684.80, 31,028.76 and 6,451.48

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Solution

The fourth proportional to 20,684.80, 31,028.76 and 6,451.48 is: 9,677.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.80 : 31,028.76 = 6,451.48 : x
  2. Step 2: Convert to fraction form
    20,684.80/31,028.76 = 6,451.48/x
  3. Step 3: Cross multiply
    20,684.80x = 31,028.76 × 6,451.48
  4. Step 4: Simplify right side
    20,684.80x = 200,181,424.56
  5. Step 5: Solve for x
    x = 200,181,424.56/20,684.80
  6. Step 6: Final answer
    x = 9,677.71

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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.