Home / 20,446,980.75-28,216,379.31-11,279,621.07

Finding the Fourth Proportional to 20,446,980.75, 28,216,379.31 and 11,279,621.07

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Solution

The fourth proportional to 20,446,980.75, 28,216,379.31 and 11,279,621.07 is: 15,565,626.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446,980.75 : 28,216,379.31 = 11,279,621.07 : x
  2. Step 2: Convert to fraction form
    20,446,980.75/28,216,379.31 = 11,279,621.07/x
  3. Step 3: Cross multiply
    20,446,980.75x = 28,216,379.31 × 11,279,621.07
  4. Step 4: Simplify right side
    20,446,980.75x = 318,270,066,584,188.06
  5. Step 5: Solve for x
    x = 318,270,066,584,188.06/20,446,980.75
  6. Step 6: Final answer
    x = 15,565,626.56

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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.