Home / 15,257,379.21-21,055,481.42-8,382,121.89

Finding the Fourth Proportional to 15,257,379.21, 21,055,481.42 and 8,382,121.89

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Solution

The fourth proportional to 15,257,379.21, 21,055,481.42 and 8,382,121.89 is: 11,567,491.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,257,379.21 : 21,055,481.42 = 8,382,121.89 : x
  2. Step 2: Convert to fraction form
    15,257,379.21/21,055,481.42 = 8,382,121.89/x
  3. Step 3: Cross multiply
    15,257,379.21x = 21,055,481.42 × 8,382,121.89
  4. Step 4: Simplify right side
    15,257,379.21x = 176,489,611,673,159.66
  5. Step 5: Solve for x
    x = 176,489,611,673,159.66/15,257,379.21
  6. Step 6: Final answer
    x = 11,567,491.98

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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.