Home / 20,689,953.57-28,553,021.78-11,522,596.32

Finding the Fourth Proportional to 20,689,953.57, 28,553,021.78 and 11,522,596.32

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Solution

The fourth proportional to 20,689,953.57, 28,553,021.78 and 11,522,596.32 is: 15,901,676.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,953.57 : 28,553,021.78 = 11,522,596.32 : x
  2. Step 2: Convert to fraction form
    20,689,953.57/28,553,021.78 = 11,522,596.32/x
  3. Step 3: Cross multiply
    20,689,953.57x = 28,553,021.78 × 11,522,596.32
  4. Step 4: Simplify right side
    20,689,953.57x = 329,004,943,629,494.88
  5. Step 5: Solve for x
    x = 329,004,943,629,494.88/20,689,953.57
  6. Step 6: Final answer
    x = 15,901,676.27

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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.