Home / 21,581,780.69-29,781,971.10-11,792,560.92

Finding the Fourth Proportional to 21,581,780.69, 29,781,971.10 and 11,792,560.92

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Solution

The fourth proportional to 21,581,780.69, 29,781,971.10 and 11,792,560.92 is: 16,273,249.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581,780.69 : 29,781,971.10 = 11,792,560.92 : x
  2. Step 2: Convert to fraction form
    21,581,780.69/29,781,971.10 = 11,792,560.92/x
  3. Step 3: Cross multiply
    21,581,780.69x = 29,781,971.10 × 11,792,560.92
  4. Step 4: Simplify right side
    21,581,780.69x = 351,205,708,514,429.44
  5. Step 5: Solve for x
    x = 351,205,708,514,429.44/21,581,780.69
  6. Step 6: Final answer
    x = 16,273,249.81

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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.