Home / 11,191.20-16,786.80-7,254.60

Finding the Fourth Proportional to 11,191.20, 16,786.80 and 7,254.60

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Solution

The fourth proportional to 11,191.20, 16,786.80 and 7,254.60 is: 10,881.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.20 : 16,786.80 = 7,254.60 : x
  2. Step 2: Convert to fraction form
    11,191.20/16,786.80 = 7,254.60/x
  3. Step 3: Cross multiply
    11,191.20x = 16,786.80 × 7,254.60
  4. Step 4: Simplify right side
    11,191.20x = 121,781,519.28
  5. Step 5: Solve for x
    x = 121,781,519.28/11,191.20
  6. Step 6: Final answer
    x = 10,881.90

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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.