Home / 20,728,013.58-31,096,005.56-7,947,521.60

Finding the Fourth Proportional to 20,728,013.58, 31,096,005.56 and 7,947,521.60

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Solution

The fourth proportional to 20,728,013.58, 31,096,005.56 and 7,947,521.60 is: 11,922,810.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,013.58 : 31,096,005.56 = 7,947,521.60 : x
  2. Step 2: Convert to fraction form
    20,728,013.58/31,096,005.56 = 7,947,521.60/x
  3. Step 3: Cross multiply
    20,728,013.58x = 31,096,005.56 × 7,947,521.60
  4. Step 4: Simplify right side
    20,728,013.58x = 247,136,175,666,602.44
  5. Step 5: Solve for x
    x = 247,136,175,666,602.44/20,728,013.58
  6. Step 6: Final answer
    x = 11,922,810.39

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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.