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Finding the Fourth Proportional to 20,222.94, 30,335.94 and 6,891.79

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Solution

The fourth proportional to 20,222.94, 30,335.94 and 6,891.79 is: 10,338.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,222.94 : 30,335.94 = 6,891.79 : x
  2. Step 2: Convert to fraction form
    20,222.94/30,335.94 = 6,891.79/x
  3. Step 3: Cross multiply
    20,222.94x = 30,335.94 × 6,891.79
  4. Step 4: Simplify right side
    20,222.94x = 209,068,852.09
  5. Step 5: Solve for x
    x = 209,068,852.09/20,222.94
  6. Step 6: Final answer
    x = 10,338.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.