Home / 20,910.92-28,856.42-11,350.35

Finding the Fourth Proportional to 20,910.92, 28,856.42 and 11,350.35

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Solution

The fourth proportional to 20,910.92, 28,856.42 and 11,350.35 is: 15,663.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.92 : 28,856.42 = 11,350.35 : x
  2. Step 2: Convert to fraction form
    20,910.92/28,856.42 = 11,350.35/x
  3. Step 3: Cross multiply
    20,910.92x = 28,856.42 × 11,350.35
  4. Step 4: Simplify right side
    20,910.92x = 327,530,410.00
  5. Step 5: Solve for x
    x = 327,530,410.00/20,910.92
  6. Step 6: Final answer
    x = 15,663.13

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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.