Home / 11,000.28-15,191.82-8,455.80

Finding the Fourth Proportional to 11,000.28, 15,191.82 and 8,455.80

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Solution

The fourth proportional to 11,000.28, 15,191.82 and 8,455.80 is: 11,677.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,000.28 : 15,191.82 = 8,455.80 : x
  2. Step 2: Convert to fraction form
    11,000.28/15,191.82 = 8,455.80/x
  3. Step 3: Cross multiply
    11,000.28x = 15,191.82 × 8,455.80
  4. Step 4: Simplify right side
    11,000.28x = 128,458,991.56
  5. Step 5: Solve for x
    x = 128,458,991.56/11,000.28
  6. Step 6: Final answer
    x = 11,677.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.