Home / 20,676.82-28,534.08-11,245.42

Finding the Fourth Proportional to 20,676.82, 28,534.08 and 11,245.42

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Solution

The fourth proportional to 20,676.82, 28,534.08 and 11,245.42 is: 15,518.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.82 : 28,534.08 = 11,245.42 : x
  2. Step 2: Convert to fraction form
    20,676.82/28,534.08 = 11,245.42/x
  3. Step 3: Cross multiply
    20,676.82x = 28,534.08 × 11,245.42
  4. Step 4: Simplify right side
    20,676.82x = 320,877,713.91
  5. Step 5: Solve for x
    x = 320,877,713.91/20,676.82
  6. Step 6: Final answer
    x = 15,518.72

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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.