Home / 20,763,993.85-31,129,128.90-8,642,530.46

Finding the Fourth Proportional to 20,763,993.85, 31,129,128.90 and 8,642,530.46

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Solution

The fourth proportional to 20,763,993.85, 31,129,128.90 and 8,642,530.46 is: 12,956,777.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763,993.85 : 31,129,128.90 = 8,642,530.46 : x
  2. Step 2: Convert to fraction form
    20,763,993.85/31,129,128.90 = 8,642,530.46/x
  3. Step 3: Cross multiply
    20,763,993.85x = 31,129,128.90 × 8,642,530.46
  4. Step 4: Simplify right side
    20,763,993.85x = 269,034,444,789,339.12
  5. Step 5: Solve for x
    x = 269,034,444,789,339.12/20,763,993.85
  6. Step 6: Final answer
    x = 12,956,777.33

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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.