Home / 20,809,421.60-31,193,137.20-9,458,016.80

Finding the Fourth Proportional to 20,809,421.60, 31,193,137.20 and 9,458,016.80

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Solution

The fourth proportional to 20,809,421.60, 31,193,137.20 and 9,458,016.80 is: 14,177,482.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,421.60 : 31,193,137.20 = 9,458,016.80 : x
  2. Step 2: Convert to fraction form
    20,809,421.60/31,193,137.20 = 9,458,016.80/x
  3. Step 3: Cross multiply
    20,809,421.60x = 31,193,137.20 × 9,458,016.80
  4. Step 4: Simplify right side
    20,809,421.60x = 295,025,215,682,305
  5. Step 5: Solve for x
    x = 295,025,215,682,305/20,809,421.60
  6. Step 6: Final answer
    x = 14,177,482.75

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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.