Home / 20,383,758-28,129,785.48-11,216,598.48

Finding the Fourth Proportional to 20,383,758, 28,129,785.48 and 11,216,598.48

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Solution

The fourth proportional to 20,383,758, 28,129,785.48 and 11,216,598.48 is: 15,479,015.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383,758 : 28,129,785.48 = 11,216,598.48 : x
  2. Step 2: Convert to fraction form
    20,383,758/28,129,785.48 = 11,216,598.48/x
  3. Step 3: Cross multiply
    20,383,758x = 28,129,785.48 × 11,216,598.48
  4. Step 4: Simplify right side
    20,383,758x = 315,520,509,057,694.06
  5. Step 5: Solve for x
    x = 315,520,509,057,694.06/20,383,758
  6. Step 6: Final answer
    x = 15,479,015.65

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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.