Home / 20,630,288.88-28,470,481.22-11,338,188.32

Finding the Fourth Proportional to 20,630,288.88, 28,470,481.22 and 11,338,188.32

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Solution

The fourth proportional to 20,630,288.88, 28,470,481.22 and 11,338,188.32 is: 15,647,075.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630,288.88 : 28,470,481.22 = 11,338,188.32 : x
  2. Step 2: Convert to fraction form
    20,630,288.88/28,470,481.22 = 11,338,188.32/x
  3. Step 3: Cross multiply
    20,630,288.88x = 28,470,481.22 × 11,338,188.32
  4. Step 4: Simplify right side
    20,630,288.88x = 322,803,677,732,905
  5. Step 5: Solve for x
    x = 322,803,677,732,905/20,630,288.88
  6. Step 6: Final answer
    x = 15,647,075.02

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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.