Home / 19,431.40-29,145.48-11,634.52

Finding the Fourth Proportional to 19,431.40, 29,145.48 and 11,634.52

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Solution

The fourth proportional to 19,431.40, 29,145.48 and 11,634.52 is: 17,450.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.40 : 29,145.48 = 11,634.52 : x
  2. Step 2: Convert to fraction form
    19,431.40/29,145.48 = 11,634.52/x
  3. Step 3: Cross multiply
    19,431.40x = 29,145.48 × 11,634.52
  4. Step 4: Simplify right side
    19,431.40x = 339,093,669.97
  5. Step 5: Solve for x
    x = 339,093,669.97/19,431.40
  6. Step 6: Final answer
    x = 17,450.81

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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.