Home / 28,161,179.55-42,259,538.97-11,987,104.98

Finding the Fourth Proportional to 28,161,179.55, 42,259,538.97 and 11,987,104.98

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Solution

The fourth proportional to 28,161,179.55, 42,259,538.97 and 11,987,104.98 is: 17,988,221.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161,179.55 : 42,259,538.97 = 11,987,104.98 : x
  2. Step 2: Convert to fraction form
    28,161,179.55/42,259,538.97 = 11,987,104.98/x
  3. Step 3: Cross multiply
    28,161,179.55x = 42,259,538.97 × 11,987,104.98
  4. Step 4: Simplify right side
    28,161,179.55x = 506,569,530,039,791.06
  5. Step 5: Solve for x
    x = 506,569,530,039,791.06/28,161,179.55
  6. Step 6: Final answer
    x = 17,988,221.31

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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.