Home / 20,687.88-31,024.26-7,536.36

Finding the Fourth Proportional to 20,687.88, 31,024.26 and 7,536.36

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Solution

The fourth proportional to 20,687.88, 31,024.26 and 7,536.36 is: 11,301.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.88 : 31,024.26 = 7,536.36 : x
  2. Step 2: Convert to fraction form
    20,687.88/31,024.26 = 7,536.36/x
  3. Step 3: Cross multiply
    20,687.88x = 31,024.26 × 7,536.36
  4. Step 4: Simplify right side
    20,687.88x = 233,809,992.09
  5. Step 5: Solve for x
    x = 233,809,992.09/20,687.88
  6. Step 6: Final answer
    x = 11,301.79

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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.