Home / 20,112.00-30,136.79-7,625.31

Finding the Fourth Proportional to 20,112.00, 30,136.79 and 7,625.31

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Solution

The fourth proportional to 20,112.00, 30,136.79 and 7,625.31 is: 11,426.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.00 : 30,136.79 = 7,625.31 : x
  2. Step 2: Convert to fraction form
    20,112.00/30,136.79 = 7,625.31/x
  3. Step 3: Cross multiply
    20,112.00x = 30,136.79 × 7,625.31
  4. Step 4: Simplify right side
    20,112.00x = 229,802,177.34
  5. Step 5: Solve for x
    x = 229,802,177.34/20,112.00
  6. Step 6: Final answer
    x = 11,426.13

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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.