Home / 20,380,325.07-30,558,765.27-12,191,147.31

Finding the Fourth Proportional to 20,380,325.07, 30,558,765.27 and 12,191,147.31

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Solution

The fourth proportional to 20,380,325.07, 30,558,765.27 and 12,191,147.31 is: 18,279,708.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380,325.07 : 30,558,765.27 = 12,191,147.31 : x
  2. Step 2: Convert to fraction form
    20,380,325.07/30,558,765.27 = 12,191,147.31/x
  3. Step 3: Cross multiply
    20,380,325.07x = 30,558,765.27 × 12,191,147.31
  4. Step 4: Simplify right side
    20,380,325.07x = 372,546,409,018,281.94
  5. Step 5: Solve for x
    x = 372,546,409,018,281.94/20,380,325.07
  6. Step 6: Final answer
    x = 18,279,708.87

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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.