Home / 20,620,554.47-28,453,201.86-11,917,046.25

Finding the Fourth Proportional to 20,620,554.47, 28,453,201.86 and 11,917,046.25

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Solution

The fourth proportional to 20,620,554.47, 28,453,201.86 and 11,917,046.25 is: 16,443,695.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620,554.47 : 28,453,201.86 = 11,917,046.25 : x
  2. Step 2: Convert to fraction form
    20,620,554.47/28,453,201.86 = 11,917,046.25/x
  3. Step 3: Cross multiply
    20,620,554.47x = 28,453,201.86 × 11,917,046.25
  4. Step 4: Simplify right side
    20,620,554.47x = 339,078,122,526,206
  5. Step 5: Solve for x
    x = 339,078,122,526,206/20,620,554.47
  6. Step 6: Final answer
    x = 16,443,695.69

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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.