Home / 20,802,304.44-31,182,986.16-12,155,431.32

Finding the Fourth Proportional to 20,802,304.44, 31,182,986.16 and 12,155,431.32

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Solution

The fourth proportional to 20,802,304.44, 31,182,986.16 and 12,155,431.32 is: 18,221,185.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802,304.44 : 31,182,986.16 = 12,155,431.32 : x
  2. Step 2: Convert to fraction form
    20,802,304.44/31,182,986.16 = 12,155,431.32/x
  3. Step 3: Cross multiply
    20,802,304.44x = 31,182,986.16 × 12,155,431.32
  4. Step 4: Simplify right side
    20,802,304.44x = 379,042,646,620,390.56
  5. Step 5: Solve for x
    x = 379,042,646,620,390.56/20,802,304.44
  6. Step 6: Final answer
    x = 18,221,185.43

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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.