Home / 28,699,965.15-39,605,923.98-15,647,220.60

Finding the Fourth Proportional to 28,699,965.15, 39,605,923.98 and 15,647,220.60

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Solution

The fourth proportional to 28,699,965.15, 39,605,923.98 and 15,647,220.60 is: 21,593,149.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,699,965.15 : 39,605,923.98 = 15,647,220.60 : x
  2. Step 2: Convert to fraction form
    28,699,965.15/39,605,923.98 = 15,647,220.60/x
  3. Step 3: Cross multiply
    28,699,965.15x = 39,605,923.98 × 15,647,220.60
  4. Step 4: Simplify right side
    28,699,965.15x = 619,722,629,581,889.88
  5. Step 5: Solve for x
    x = 619,722,629,581,889.88/28,699,965.15
  6. Step 6: Final answer
    x = 21,593,149.20

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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.