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Finding the Fourth Proportional to 18,884.80, 28,339.44 and 17,441.92

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Solution

The fourth proportional to 18,884.80, 28,339.44 and 17,441.92 is: 26,174.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,884.80 : 28,339.44 = 17,441.92 : x
  2. Step 2: Convert to fraction form
    18,884.80/28,339.44 = 17,441.92/x
  3. Step 3: Cross multiply
    18,884.80x = 28,339.44 × 17,441.92
  4. Step 4: Simplify right side
    18,884.80x = 494,294,245.32
  5. Step 5: Solve for x
    x = 494,294,245.32/18,884.80
  6. Step 6: Final answer
    x = 26,174.18

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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.