Home / 11,115.41-16,677.78-4,872.20

Finding the Fourth Proportional to 11,115.41, 16,677.78 and 4,872.20

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Solution

The fourth proportional to 11,115.41, 16,677.78 and 4,872.20 is: 7,310.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.41 : 16,677.78 = 4,872.20 : x
  2. Step 2: Convert to fraction form
    11,115.41/16,677.78 = 4,872.20/x
  3. Step 3: Cross multiply
    11,115.41x = 16,677.78 × 4,872.20
  4. Step 4: Simplify right side
    11,115.41x = 81,257,479.72
  5. Step 5: Solve for x
    x = 81,257,479.72/11,115.41
  6. Step 6: Final answer
    x = 7,310.34

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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.