Home / 11,511.45-15,889.37-8,855.73

Finding the Fourth Proportional to 11,511.45, 15,889.37 and 8,855.73

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Solution

The fourth proportional to 11,511.45, 15,889.37 and 8,855.73 is: 12,223.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,511.45 : 15,889.37 = 8,855.73 : x
  2. Step 2: Convert to fraction form
    11,511.45/15,889.37 = 8,855.73/x
  3. Step 3: Cross multiply
    11,511.45x = 15,889.37 × 8,855.73
  4. Step 4: Simplify right side
    11,511.45x = 140,711,926.31
  5. Step 5: Solve for x
    x = 140,711,926.31/11,511.45
  6. Step 6: Final answer
    x = 12,223.65

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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.