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Finding the Fourth Proportional to 10,890.80, 16,336.16 and 2,682.80

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Solution

The fourth proportional to 10,890.80, 16,336.16 and 2,682.80 is: 4,024.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.80 : 16,336.16 = 2,682.80 : x
  2. Step 2: Convert to fraction form
    10,890.80/16,336.16 = 2,682.80/x
  3. Step 3: Cross multiply
    10,890.80x = 16,336.16 × 2,682.80
  4. Step 4: Simplify right side
    10,890.80x = 43,826,650.05
  5. Step 5: Solve for x
    x = 43,826,650.05/10,890.80
  6. Step 6: Final answer
    x = 4,024.19

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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.