Home / 18,539.70-27,812.26-5,390.36

Finding the Fourth Proportional to 18,539.70, 27,812.26 and 5,390.36

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Solution

The fourth proportional to 18,539.70, 27,812.26 and 5,390.36 is: 8,086.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,539.70 : 27,812.26 = 5,390.36 : x
  2. Step 2: Convert to fraction form
    18,539.70/27,812.26 = 5,390.36/x
  3. Step 3: Cross multiply
    18,539.70x = 27,812.26 × 5,390.36
  4. Step 4: Simplify right side
    18,539.70x = 149,918,093.81
  5. Step 5: Solve for x
    x = 149,918,093.81/18,539.70
  6. Step 6: Final answer
    x = 8,086.33

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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.