Home / 21,784.33-30,062.39-12,222.90

Finding the Fourth Proportional to 21,784.33, 30,062.39 and 12,222.90

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Solution

The fourth proportional to 21,784.33, 30,062.39 and 12,222.90 is: 16,867.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,784.33 : 30,062.39 = 12,222.90 : x
  2. Step 2: Convert to fraction form
    21,784.33/30,062.39 = 12,222.90/x
  3. Step 3: Cross multiply
    21,784.33x = 30,062.39 × 12,222.90
  4. Step 4: Simplify right side
    21,784.33x = 367,449,375.30
  5. Step 5: Solve for x
    x = 367,449,375.30/21,784.33
  6. Step 6: Final answer
    x = 16,867.60

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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.