Home / 20,944.20-28,901.97-11,512.56

Finding the Fourth Proportional to 20,944.20, 28,901.97 and 11,512.56

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Solution

The fourth proportional to 20,944.20, 28,901.97 and 11,512.56 is: 15,886.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,944.20 : 28,901.97 = 11,512.56 : x
  2. Step 2: Convert to fraction form
    20,944.20/28,901.97 = 11,512.56/x
  3. Step 3: Cross multiply
    20,944.20x = 28,901.97 × 11,512.56
  4. Step 4: Simplify right side
    20,944.20x = 332,735,663.74
  5. Step 5: Solve for x
    x = 332,735,663.74/20,944.20
  6. Step 6: Final answer
    x = 15,886.77

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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.