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Finding the Fourth Proportional to 30,939.96, 46,409.88 and 11,218.46

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Solution

The fourth proportional to 30,939.96, 46,409.88 and 11,218.46 is: 16,827.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,939.96 : 46,409.88 = 11,218.46 : x
  2. Step 2: Convert to fraction form
    30,939.96/46,409.88 = 11,218.46/x
  3. Step 3: Cross multiply
    30,939.96x = 46,409.88 × 11,218.46
  4. Step 4: Simplify right side
    30,939.96x = 520,647,382.38
  5. Step 5: Solve for x
    x = 520,647,382.38/30,939.96
  6. Step 6: Final answer
    x = 16,827.67

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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.