Home / 18,728,249.70-28,071,379.35-7,943,715.30

Finding the Fourth Proportional to 18,728,249.70, 28,071,379.35 and 7,943,715.30

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Solution

The fourth proportional to 18,728,249.70, 28,071,379.35 and 7,943,715.30 is: 11,906,667.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728,249.70 : 28,071,379.35 = 7,943,715.30 : x
  2. Step 2: Convert to fraction form
    18,728,249.70/28,071,379.35 = 7,943,715.30/x
  3. Step 3: Cross multiply
    18,728,249.70x = 28,071,379.35 × 7,943,715.30
  4. Step 4: Simplify right side
    18,728,249.70x = 222,991,045,634,699.06
  5. Step 5: Solve for x
    x = 222,991,045,634,699.06/18,728,249.70
  6. Step 6: Final answer
    x = 11,906,667.69

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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.