Home / 20,933.26-28,871.18-13,770.54

Finding the Fourth Proportional to 20,933.26, 28,871.18 and 13,770.54

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Solution

The fourth proportional to 20,933.26, 28,871.18 and 13,770.54 is: 18,992.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.26 : 28,871.18 = 13,770.54 : x
  2. Step 2: Convert to fraction form
    20,933.26/28,871.18 = 13,770.54/x
  3. Step 3: Cross multiply
    20,933.26x = 28,871.18 × 13,770.54
  4. Step 4: Simplify right side
    20,933.26x = 397,571,739.04
  5. Step 5: Solve for x
    x = 397,571,739.04/20,933.26
  6. Step 6: Final answer
    x = 18,992.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.