Home / 13,726,815.30-18,935,134.83-8,561,208.78

Finding the Fourth Proportional to 13,726,815.30, 18,935,134.83 and 8,561,208.78

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Solution

The fourth proportional to 13,726,815.30, 18,935,134.83 and 8,561,208.78 is: 11,809,559.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726,815.30 : 18,935,134.83 = 8,561,208.78 : x
  2. Step 2: Convert to fraction form
    13,726,815.30/18,935,134.83 = 8,561,208.78/x
  3. Step 3: Cross multiply
    13,726,815.30x = 18,935,134.83 × 8,561,208.78
  4. Step 4: Simplify right side
    13,726,815.30x = 162,107,642,557,079.78
  5. Step 5: Solve for x
    x = 162,107,642,557,079.78/13,726,815.30
  6. Step 6: Final answer
    x = 11,809,559.54

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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.