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Finding the Fourth Proportional to 18,922.23, 28,383.11 and 5,774.64

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Solution

The fourth proportional to 18,922.23, 28,383.11 and 5,774.64 is: 8,661.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922.23 : 28,383.11 = 5,774.64 : x
  2. Step 2: Convert to fraction form
    18,922.23/28,383.11 = 5,774.64/x
  3. Step 3: Cross multiply
    18,922.23x = 28,383.11 × 5,774.64
  4. Step 4: Simplify right side
    18,922.23x = 163,902,150.33
  5. Step 5: Solve for x
    x = 163,902,150.33/18,922.23
  6. Step 6: Final answer
    x = 8,661.88

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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.