Home / 20,321,820.24-28,067,386.92-13,383,513.60

Finding the Fourth Proportional to 20,321,820.24, 28,067,386.92 and 13,383,513.60

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Solution

The fourth proportional to 20,321,820.24, 28,067,386.92 and 13,383,513.60 is: 18,484,577.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321,820.24 : 28,067,386.92 = 13,383,513.60 : x
  2. Step 2: Convert to fraction form
    20,321,820.24/28,067,386.92 = 13,383,513.60/x
  3. Step 3: Cross multiply
    20,321,820.24x = 28,067,386.92 × 13,383,513.60
  4. Step 4: Simplify right side
    20,321,820.24x = 375,640,254,560,282.12
  5. Step 5: Solve for x
    x = 375,640,254,560,282.12/20,321,820.24
  6. Step 6: Final answer
    x = 18,484,577.17

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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.