Home / 19,720.97-29,534.31-11,375.69

Finding the Fourth Proportional to 19,720.97, 29,534.31 and 11,375.69

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Solution

The fourth proportional to 19,720.97, 29,534.31 and 11,375.69 is: 17,036.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.97 : 29,534.31 = 11,375.69 : x
  2. Step 2: Convert to fraction form
    19,720.97/29,534.31 = 11,375.69/x
  3. Step 3: Cross multiply
    19,720.97x = 29,534.31 × 11,375.69
  4. Step 4: Simplify right side
    19,720.97x = 335,973,007.25
  5. Step 5: Solve for x
    x = 335,973,007.25/19,720.97
  6. Step 6: Final answer
    x = 17,036.34

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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.