Home / 20,083,163.16-27,728,111.80-15,428,658.54

Finding the Fourth Proportional to 20,083,163.16, 27,728,111.80 and 15,428,658.54

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Solution

The fourth proportional to 20,083,163.16, 27,728,111.80 and 15,428,658.54 is: 21,301,802.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083,163.16 : 27,728,111.80 = 15,428,658.54 : x
  2. Step 2: Convert to fraction form
    20,083,163.16/27,728,111.80 = 15,428,658.54/x
  3. Step 3: Cross multiply
    20,083,163.16x = 27,728,111.80 × 15,428,658.54
  4. Step 4: Simplify right side
    20,083,163.16x = 427,807,568,921,144.75
  5. Step 5: Solve for x
    x = 427,807,568,921,144.75/20,083,163.16
  6. Step 6: Final answer
    x = 21,301,802.19

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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.