Home / 20,764.72-28,656.48-11,333.44

Finding the Fourth Proportional to 20,764.72, 28,656.48 and 11,333.44

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Solution

The fourth proportional to 20,764.72, 28,656.48 and 11,333.44 is: 15,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.72 : 28,656.48 = 11,333.44 : x
  2. Step 2: Convert to fraction form
    20,764.72/28,656.48 = 11,333.44/x
  3. Step 3: Cross multiply
    20,764.72x = 28,656.48 × 11,333.44
  4. Step 4: Simplify right side
    20,764.72x = 324,776,496.69
  5. Step 5: Solve for x
    x = 324,776,496.69/20,764.72
  6. Step 6: Final answer
    x = 15,640.78

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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.