Home / 13,078,190.96-19,620,109.92-3,980,999.84

Finding the Fourth Proportional to 13,078,190.96, 19,620,109.92 and 3,980,999.84

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Solution

The fourth proportional to 13,078,190.96, 19,620,109.92 and 3,980,999.84 is: 5,972,359.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078,190.96 : 19,620,109.92 = 3,980,999.84 : x
  2. Step 2: Convert to fraction form
    13,078,190.96/19,620,109.92 = 3,980,999.84/x
  3. Step 3: Cross multiply
    13,078,190.96x = 19,620,109.92 × 3,980,999.84
  4. Step 4: Simplify right side
    13,078,190.96x = 78,107,654,452,302.42
  5. Step 5: Solve for x
    x = 78,107,654,452,302.42/13,078,190.96
  6. Step 6: Final answer
    x = 5,972,359.23

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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.