Home / 10,811.80-16,204.90-8,072.60

Finding the Fourth Proportional to 10,811.80, 16,204.90 and 8,072.60

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Solution

The fourth proportional to 10,811.80, 16,204.90 and 8,072.60 is: 12,099.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,811.80 : 16,204.90 = 8,072.60 : x
  2. Step 2: Convert to fraction form
    10,811.80/16,204.90 = 8,072.60/x
  3. Step 3: Cross multiply
    10,811.80x = 16,204.90 × 8,072.60
  4. Step 4: Simplify right side
    10,811.80x = 130,815,675.74
  5. Step 5: Solve for x
    x = 130,815,675.74/10,811.80
  6. Step 6: Final answer
    x = 12,099.34

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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.