Home / 20,910.36-28,856.18-11,350.44

Finding the Fourth Proportional to 20,910.36, 28,856.18 and 11,350.44

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Solution

The fourth proportional to 20,910.36, 28,856.18 and 11,350.44 is: 15,663.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.36 : 28,856.18 = 11,350.44 : x
  2. Step 2: Convert to fraction form
    20,910.36/28,856.18 = 11,350.44/x
  3. Step 3: Cross multiply
    20,910.36x = 28,856.18 × 11,350.44
  4. Step 4: Simplify right side
    20,910.36x = 327,530,339.72
  5. Step 5: Solve for x
    x = 327,530,339.72/20,910.36
  6. Step 6: Final answer
    x = 15,663.54

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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.