Home / 20,809,415.60-31,193,128.20-9,458,010.80

Finding the Fourth Proportional to 20,809,415.60, 31,193,128.20 and 9,458,010.80

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Solution

The fourth proportional to 20,809,415.60, 31,193,128.20 and 9,458,010.80 is: 14,177,473.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,415.60 : 31,193,128.20 = 9,458,010.80 : x
  2. Step 2: Convert to fraction form
    20,809,415.60/31,193,128.20 = 9,458,010.80/x
  3. Step 3: Cross multiply
    20,809,415.60x = 31,193,128.20 × 9,458,010.80
  4. Step 4: Simplify right side
    20,809,415.60x = 295,024,943,401,384.56
  5. Step 5: Solve for x
    x = 295,024,943,401,384.56/20,809,415.60
  6. Step 6: Final answer
    x = 14,177,473.75

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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.