Home / 21,981,879.45-30,338,625.71-12,195,476.66

Finding the Fourth Proportional to 21,981,879.45, 30,338,625.71 and 12,195,476.66

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Solution

The fourth proportional to 21,981,879.45, 30,338,625.71 and 12,195,476.66 is: 16,831,772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981,879.45 : 30,338,625.71 = 12,195,476.66 : x
  2. Step 2: Convert to fraction form
    21,981,879.45/30,338,625.71 = 12,195,476.66/x
  3. Step 3: Cross multiply
    21,981,879.45x = 30,338,625.71 × 12,195,476.66
  4. Step 4: Simplify right side
    21,981,879.45x = 369,994,001,849,116.12
  5. Step 5: Solve for x
    x = 369,994,001,849,116.12/21,981,879.45
  6. Step 6: Final answer
    x = 16,831,772.86

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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.