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Finding the Fourth Proportional to 10,797.20, 16,198.20 and 8,464.40

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Solution

The fourth proportional to 10,797.20, 16,198.20 and 8,464.40 is: 12,698.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,797.20 : 16,198.20 = 8,464.40 : x
  2. Step 2: Convert to fraction form
    10,797.20/16,198.20 = 8,464.40/x
  3. Step 3: Cross multiply
    10,797.20x = 16,198.20 × 8,464.40
  4. Step 4: Simplify right side
    10,797.20x = 137,108,044.08
  5. Step 5: Solve for x
    x = 137,108,044.08/10,797.20
  6. Step 6: Final answer
    x = 12,698.48

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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.