Home / 21,181,005.50-31,771,456.07-11,954,795.47

Finding the Fourth Proportional to 21,181,005.50, 31,771,456.07 and 11,954,795.47

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Solution

The fourth proportional to 21,181,005.50, 31,771,456.07 and 11,954,795.47 is: 17,932,163.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181,005.50 : 31,771,456.07 = 11,954,795.47 : x
  2. Step 2: Convert to fraction form
    21,181,005.50/31,771,456.07 = 11,954,795.47/x
  3. Step 3: Cross multiply
    21,181,005.50x = 31,771,456.07 × 11,954,795.47
  4. Step 4: Simplify right side
    21,181,005.50x = 379,821,258,961,737.38
  5. Step 5: Solve for x
    x = 379,821,258,961,737.38/21,181,005.50
  6. Step 6: Final answer
    x = 17,932,163.75

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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.