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Finding the Fourth Proportional to 19,318,703.10, 28,978,054.65 and 17,303,163.90

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Solution

The fourth proportional to 19,318,703.10, 28,978,054.65 and 17,303,163.90 is: 25,954,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318,703.10 : 28,978,054.65 = 17,303,163.90 : x
  2. Step 2: Convert to fraction form
    19,318,703.10/28,978,054.65 = 17,303,163.90/x
  3. Step 3: Cross multiply
    19,318,703.10x = 28,978,054.65 × 17,303,163.90
  4. Step 4: Simplify right side
    19,318,703.10x = 501,412,029,112,107.06
  5. Step 5: Solve for x
    x = 501,412,029,112,107.06/19,318,703.10
  6. Step 6: Final answer
    x = 25,954,745.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.