Home / 11,172.20-16,739.10-7,274.60

Finding the Fourth Proportional to 11,172.20, 16,739.10 and 7,274.60

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Solution

The fourth proportional to 11,172.20, 16,739.10 and 7,274.60 is: 10,899.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.20 : 16,739.10 = 7,274.60 : x
  2. Step 2: Convert to fraction form
    11,172.20/16,739.10 = 7,274.60/x
  3. Step 3: Cross multiply
    11,172.20x = 16,739.10 × 7,274.60
  4. Step 4: Simplify right side
    11,172.20x = 121,770,256.86
  5. Step 5: Solve for x
    x = 121,770,256.86/11,172.20
  6. Step 6: Final answer
    x = 10,899.40

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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.