Home / 20,944.30-28,903.38-11,512.88

Finding the Fourth Proportional to 20,944.30, 28,903.38 and 11,512.88

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Solution

The fourth proportional to 20,944.30, 28,903.38 and 11,512.88 is: 15,887.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,944.30 : 28,903.38 = 11,512.88 : x
  2. Step 2: Convert to fraction form
    20,944.30/28,903.38 = 11,512.88/x
  3. Step 3: Cross multiply
    20,944.30x = 28,903.38 × 11,512.88
  4. Step 4: Simplify right side
    20,944.30x = 332,761,145.53
  5. Step 5: Solve for x
    x = 332,761,145.53/20,944.30
  6. Step 6: Final answer
    x = 15,887.91

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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.