Home / 11,784.20-16,245.08-8,236.40

Finding the Fourth Proportional to 11,784.20, 16,245.08 and 8,236.40

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Solution

The fourth proportional to 11,784.20, 16,245.08 and 8,236.40 is: 11,354.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,784.20 : 16,245.08 = 8,236.40 : x
  2. Step 2: Convert to fraction form
    11,784.20/16,245.08 = 8,236.40/x
  3. Step 3: Cross multiply
    11,784.20x = 16,245.08 × 8,236.40
  4. Step 4: Simplify right side
    11,784.20x = 133,800,976.91
  5. Step 5: Solve for x
    x = 133,800,976.91/11,784.20
  6. Step 6: Final answer
    x = 11,354.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.