Home / 21,580,379.70-29,780,572.08-11,790,613.20

Finding the Fourth Proportional to 21,580,379.70, 29,780,572.08 and 11,790,613.20

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Solution

The fourth proportional to 21,580,379.70, 29,780,572.08 and 11,790,613.20 is: 16,270,853.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,580,379.70 : 29,780,572.08 = 11,790,613.20 : x
  2. Step 2: Convert to fraction form
    21,580,379.70/29,780,572.08 = 11,790,613.20/x
  3. Step 3: Cross multiply
    21,580,379.70x = 29,780,572.08 × 11,790,613.20
  4. Step 4: Simplify right side
    21,580,379.70x = 351,131,206,269,999.44
  5. Step 5: Solve for x
    x = 351,131,206,269,999.44/21,580,379.70
  6. Step 6: Final answer
    x = 16,270,853.95

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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.