Home / 21,824.51-30,121.26-12,873.02

Finding the Fourth Proportional to 21,824.51, 30,121.26 and 12,873.02

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Solution

The fourth proportional to 21,824.51, 30,121.26 and 12,873.02 is: 17,766.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,824.51 : 30,121.26 = 12,873.02 : x
  2. Step 2: Convert to fraction form
    21,824.51/30,121.26 = 12,873.02/x
  3. Step 3: Cross multiply
    21,824.51x = 30,121.26 × 12,873.02
  4. Step 4: Simplify right side
    21,824.51x = 387,751,582.41
  5. Step 5: Solve for x
    x = 387,751,582.41/21,824.51
  6. Step 6: Final answer
    x = 17,766.79

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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.