Home / 20,515,162.36-28,310,574.72-11,347,797.84

Finding the Fourth Proportional to 20,515,162.36, 28,310,574.72 and 11,347,797.84

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Solution

The fourth proportional to 20,515,162.36, 28,310,574.72 and 11,347,797.84 is: 15,659,767.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515,162.36 : 28,310,574.72 = 11,347,797.84 : x
  2. Step 2: Convert to fraction form
    20,515,162.36/28,310,574.72 = 11,347,797.84/x
  3. Step 3: Cross multiply
    20,515,162.36x = 28,310,574.72 × 11,347,797.84
  4. Step 4: Simplify right side
    20,515,162.36x = 321,262,678,656,774.56
  5. Step 5: Solve for x
    x = 321,262,678,656,774.56/20,515,162.36
  6. Step 6: Final answer
    x = 15,659,767.79

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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.