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Finding the Fourth Proportional to 18,818.82, 28,208.32 and 6,964.96

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Solution

The fourth proportional to 18,818.82, 28,208.32 and 6,964.96 is: 10,440.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.82 : 28,208.32 = 6,964.96 : x
  2. Step 2: Convert to fraction form
    18,818.82/28,208.32 = 6,964.96/x
  3. Step 3: Cross multiply
    18,818.82x = 28,208.32 × 6,964.96
  4. Step 4: Simplify right side
    18,818.82x = 196,469,820.47
  5. Step 5: Solve for x
    x = 196,469,820.47/18,818.82
  6. Step 6: Final answer
    x = 10,440.07

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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.