Home / 28,857,421.90-39,825,879.49-15,806,559.54

Finding the Fourth Proportional to 28,857,421.90, 39,825,879.49 and 15,806,559.54

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Solution

The fourth proportional to 28,857,421.90, 39,825,879.49 and 15,806,559.54 is: 21,814,496.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857,421.90 : 39,825,879.49 = 15,806,559.54 : x
  2. Step 2: Convert to fraction form
    28,857,421.90/39,825,879.49 = 15,806,559.54/x
  3. Step 3: Cross multiply
    28,857,421.90x = 39,825,879.49 × 15,806,559.54
  4. Step 4: Simplify right side
    28,857,421.90x = 629,510,135,560,655.12
  5. Step 5: Solve for x
    x = 629,510,135,560,655.12/28,857,421.90
  6. Step 6: Final answer
    x = 21,814,496.73

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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.