Home / 19,200,472.75-28,800,736.84-7,840,921.37

Finding the Fourth Proportional to 19,200,472.75, 28,800,736.84 and 7,840,921.37

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Solution

The fourth proportional to 19,200,472.75, 28,800,736.84 and 7,840,921.37 is: 11,761,393.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,200,472.75 : 28,800,736.84 = 7,840,921.37 : x
  2. Step 2: Convert to fraction form
    19,200,472.75/28,800,736.84 = 7,840,921.37/x
  3. Step 3: Cross multiply
    19,200,472.75x = 28,800,736.84 × 7,840,921.37
  4. Step 4: Simplify right side
    19,200,472.75x = 225,824,313,012,901.78
  5. Step 5: Solve for x
    x = 225,824,313,012,901.78/19,200,472.75
  6. Step 6: Final answer
    x = 11,761,393.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.