Home / 20,996.58-28,974.78-12,049.32

Finding the Fourth Proportional to 20,996.58, 28,974.78 and 12,049.32

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Solution

The fourth proportional to 20,996.58, 28,974.78 and 12,049.32 is: 16,627.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.58 : 28,974.78 = 12,049.32 : x
  2. Step 2: Convert to fraction form
    20,996.58/28,974.78 = 12,049.32/x
  3. Step 3: Cross multiply
    20,996.58x = 28,974.78 × 12,049.32
  4. Step 4: Simplify right side
    20,996.58x = 349,126,396.15
  5. Step 5: Solve for x
    x = 349,126,396.15/20,996.58
  6. Step 6: Final answer
    x = 16,627.77

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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.