Home / 20,456,548.32-28,229,978.72-11,289,125.44

Finding the Fourth Proportional to 20,456,548.32, 28,229,978.72 and 11,289,125.44

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Solution

The fourth proportional to 20,456,548.32, 28,229,978.72 and 11,289,125.44 is: 15,578,961.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456,548.32 : 28,229,978.72 = 11,289,125.44 : x
  2. Step 2: Convert to fraction form
    20,456,548.32/28,229,978.72 = 11,289,125.44/x
  3. Step 3: Cross multiply
    20,456,548.32x = 28,229,978.72 × 11,289,125.44
  4. Step 4: Simplify right side
    20,456,548.32x = 318,691,770,938,610.62
  5. Step 5: Solve for x
    x = 318,691,770,938,610.62/20,456,548.32
  6. Step 6: Final answer
    x = 15,578,961.12

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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.