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Finding the Fourth Proportional to 18,894.66, 28,321.23 and 7,795.33

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Solution

The fourth proportional to 18,894.66, 28,321.23 and 7,795.33 is: 11,684.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,894.66 : 28,321.23 = 7,795.33 : x
  2. Step 2: Convert to fraction form
    18,894.66/28,321.23 = 7,795.33/x
  3. Step 3: Cross multiply
    18,894.66x = 28,321.23 × 7,795.33
  4. Step 4: Simplify right side
    18,894.66x = 220,773,333.86
  5. Step 5: Solve for x
    x = 220,773,333.86/18,894.66
  6. Step 6: Final answer
    x = 11,684.43

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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.