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Finding the Fourth Proportional to 10,995.76, 16,493.64 and 3,205.20

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Solution

The fourth proportional to 10,995.76, 16,493.64 and 3,205.20 is: 4,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,995.76 : 16,493.64 = 3,205.20 : x
  2. Step 2: Convert to fraction form
    10,995.76/16,493.64 = 3,205.20/x
  3. Step 3: Cross multiply
    10,995.76x = 16,493.64 × 3,205.20
  4. Step 4: Simplify right side
    10,995.76x = 52,865,414.93
  5. Step 5: Solve for x
    x = 52,865,414.93/10,995.76
  6. Step 6: Final answer
    x = 4,807.80

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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.