Home / 21,933.45-30,268.07-11,861.90

Finding the Fourth Proportional to 21,933.45, 30,268.07 and 11,861.90

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Solution

The fourth proportional to 21,933.45, 30,268.07 and 11,861.90 is: 16,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,933.45 : 30,268.07 = 11,861.90 : x
  2. Step 2: Convert to fraction form
    21,933.45/30,268.07 = 11,861.90/x
  3. Step 3: Cross multiply
    21,933.45x = 30,268.07 × 11,861.90
  4. Step 4: Simplify right side
    21,933.45x = 359,036,766.87
  5. Step 5: Solve for x
    x = 359,036,766.87/21,933.45
  6. Step 6: Final answer
    x = 16,369.37

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1.5x scale

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.