Home / 28,188,713.01-38,905,879.48-18,382,131.88

Finding the Fourth Proportional to 28,188,713.01, 38,905,879.48 and 18,382,131.88

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Solution

The fourth proportional to 28,188,713.01, 38,905,879.48 and 18,382,131.88 is: 25,370,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188,713.01 : 38,905,879.48 = 18,382,131.88 : x
  2. Step 2: Convert to fraction form
    28,188,713.01/38,905,879.48 = 18,382,131.88/x
  3. Step 3: Cross multiply
    28,188,713.01x = 38,905,879.48 × 18,382,131.88
  4. Step 4: Simplify right side
    28,188,713.01x = 715,173,007,508,745.75
  5. Step 5: Solve for x
    x = 715,173,007,508,745.75/28,188,713.01
  6. Step 6: Final answer
    x = 25,370,899.60

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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.