Home / 20,456,495.92-28,229,935.80-11,289,137.20

Finding the Fourth Proportional to 20,456,495.92, 28,229,935.80 and 11,289,137.20

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Solution

The fourth proportional to 20,456,495.92, 28,229,935.80 and 11,289,137.20 is: 15,578,993.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456,495.92 : 28,229,935.80 = 11,289,137.20 : x
  2. Step 2: Convert to fraction form
    20,456,495.92/28,229,935.80 = 11,289,137.20/x
  3. Step 3: Cross multiply
    20,456,495.92x = 28,229,935.80 × 11,289,137.20
  4. Step 4: Simplify right side
    20,456,495.92x = 318,691,618,393,391.75
  5. Step 5: Solve for x
    x = 318,691,618,393,391.75/20,456,495.92
  6. Step 6: Final answer
    x = 15,578,993.57

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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.