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Finding the Fourth Proportional to 11,000.40, 16,500.60 and 4,077.60

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Solution

The fourth proportional to 11,000.40, 16,500.60 and 4,077.60 is: 6,116.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,000.40 : 16,500.60 = 4,077.60 : x
  2. Step 2: Convert to fraction form
    11,000.40/16,500.60 = 4,077.60/x
  3. Step 3: Cross multiply
    11,000.40x = 16,500.60 × 4,077.60
  4. Step 4: Simplify right side
    11,000.40x = 67,282,846.56
  5. Step 5: Solve for x
    x = 67,282,846.56/11,000.40
  6. Step 6: Final answer
    x = 6,116.40

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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.