Home / 20,387.14-30,583.75-7,238.41

Finding the Fourth Proportional to 20,387.14, 30,583.75 and 7,238.41

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Solution

The fourth proportional to 20,387.14, 30,583.75 and 7,238.41 is: 10,858.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.14 : 30,583.75 = 7,238.41 : x
  2. Step 2: Convert to fraction form
    20,387.14/30,583.75 = 7,238.41/x
  3. Step 3: Cross multiply
    20,387.14x = 30,583.75 × 7,238.41
  4. Step 4: Simplify right side
    20,387.14x = 221,377,721.84
  5. Step 5: Solve for x
    x = 221,377,721.84/20,387.14
  6. Step 6: Final answer
    x = 10,858.69

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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.