Home / 13,703,115.97-20,555,619.73-3,987,809.31

Finding the Fourth Proportional to 13,703,115.97, 20,555,619.73 and 3,987,809.31

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Solution

The fourth proportional to 13,703,115.97, 20,555,619.73 and 3,987,809.31 is: 5,981,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703,115.97 : 20,555,619.73 = 3,987,809.31 : x
  2. Step 2: Convert to fraction form
    13,703,115.97/20,555,619.73 = 3,987,809.31/x
  3. Step 3: Cross multiply
    13,703,115.97x = 20,555,619.73 × 3,987,809.31
  4. Step 4: Simplify right side
    13,703,115.97x = 81,971,891,712,174.64
  5. Step 5: Solve for x
    x = 81,971,891,712,174.64/13,703,115.97
  6. Step 6: Final answer
    x = 5,981,989.20

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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.