Home / 20,628.56-28,467.83-11,676.05

Finding the Fourth Proportional to 20,628.56, 28,467.83 and 11,676.05

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Solution

The fourth proportional to 20,628.56, 28,467.83 and 11,676.05 is: 16,113.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.56 : 28,467.83 = 11,676.05 : x
  2. Step 2: Convert to fraction form
    20,628.56/28,467.83 = 11,676.05/x
  3. Step 3: Cross multiply
    20,628.56x = 28,467.83 × 11,676.05
  4. Step 4: Simplify right side
    20,628.56x = 332,391,605.75
  5. Step 5: Solve for x
    x = 332,391,605.75/20,628.56
  6. Step 6: Final answer
    x = 16,113.18

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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.