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Finding the Fourth Proportional to 30,939.62, 46,409.42 and 11,218.19

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Solution

The fourth proportional to 30,939.62, 46,409.42 and 11,218.19 is: 16,827.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,939.62 : 46,409.42 = 11,218.19 : x
  2. Step 2: Convert to fraction form
    30,939.62/46,409.42 = 11,218.19/x
  3. Step 3: Cross multiply
    30,939.62x = 46,409.42 × 11,218.19
  4. Step 4: Simplify right side
    30,939.62x = 520,629,403.21
  5. Step 5: Solve for x
    x = 520,629,403.21/30,939.62
  6. Step 6: Final answer
    x = 16,827.27

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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.