Home / 21,904.64-30,227.84-11,968

Finding the Fourth Proportional to 21,904.64, 30,227.84 and 11,968

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Solution

The fourth proportional to 21,904.64, 30,227.84 and 11,968 is: 16,515.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.64 : 30,227.84 = 11,968 : x
  2. Step 2: Convert to fraction form
    21,904.64/30,227.84 = 11,968/x
  3. Step 3: Cross multiply
    21,904.64x = 30,227.84 × 11,968
  4. Step 4: Simplify right side
    21,904.64x = 361,766,789.12
  5. Step 5: Solve for x
    x = 361,766,789.12/21,904.64
  6. Step 6: Final answer
    x = 16,515.53

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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.