Home / 20,674.07-31,003.66-7,161.58

Finding the Fourth Proportional to 20,674.07, 31,003.66 and 7,161.58

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Solution

The fourth proportional to 20,674.07, 31,003.66 and 7,161.58 is: 10,739.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.07 : 31,003.66 = 7,161.58 : x
  2. Step 2: Convert to fraction form
    20,674.07/31,003.66 = 7,161.58/x
  3. Step 3: Cross multiply
    20,674.07x = 31,003.66 × 7,161.58
  4. Step 4: Simplify right side
    20,674.07x = 222,035,239.09
  5. Step 5: Solve for x
    x = 222,035,239.09/20,674.07
  6. Step 6: Final answer
    x = 10,739.79

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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.