Home / 20,728,021.48-31,096,017.42-7,947,529.49

Finding the Fourth Proportional to 20,728,021.48, 31,096,017.42 and 7,947,529.49

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Solution

The fourth proportional to 20,728,021.48, 31,096,017.42 and 7,947,529.49 is: 11,922,822.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,021.48 : 31,096,017.42 = 7,947,529.49 : x
  2. Step 2: Convert to fraction form
    20,728,021.48/31,096,017.42 = 7,947,529.49/x
  3. Step 3: Cross multiply
    20,728,021.48x = 31,096,017.42 × 7,947,529.49
  4. Step 4: Simplify right side
    20,728,021.48x = 247,136,515,514,940.53
  5. Step 5: Solve for x
    x = 247,136,515,514,940.53/20,728,021.48
  6. Step 6: Final answer
    x = 11,922,822.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.