Home / 20,994.54-31,491.26-8,511.22

Finding the Fourth Proportional to 20,994.54, 31,491.26 and 8,511.22

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Solution

The fourth proportional to 20,994.54, 31,491.26 and 8,511.22 is: 12,766.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.54 : 31,491.26 = 8,511.22 : x
  2. Step 2: Convert to fraction form
    20,994.54/31,491.26 = 8,511.22/x
  3. Step 3: Cross multiply
    20,994.54x = 31,491.26 × 8,511.22
  4. Step 4: Simplify right side
    20,994.54x = 268,029,041.94
  5. Step 5: Solve for x
    x = 268,029,041.94/20,994.54
  6. Step 6: Final answer
    x = 12,766.61

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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.