Home / 20,628.55-28,467.85-11,676.06

Finding the Fourth Proportional to 20,628.55, 28,467.85 and 11,676.06

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Solution

The fourth proportional to 20,628.55, 28,467.85 and 11,676.06 is: 16,113.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.55 : 28,467.85 = 11,676.06 : x
  2. Step 2: Convert to fraction form
    20,628.55/28,467.85 = 11,676.06/x
  3. Step 3: Cross multiply
    20,628.55x = 28,467.85 × 11,676.06
  4. Step 4: Simplify right side
    20,628.55x = 332,392,324.67
  5. Step 5: Solve for x
    x = 332,392,324.67/20,628.55
  6. Step 6: Final answer
    x = 16,113.22

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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.