Home / 18,555.14-27,767-11,538.45

Finding the Fourth Proportional to 18,555.14, 27,767 and 11,538.45

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Solution

The fourth proportional to 18,555.14, 27,767 and 11,538.45 is: 17,266.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.14 : 27,767 = 11,538.45 : x
  2. Step 2: Convert to fraction form
    18,555.14/27,767 = 11,538.45/x
  3. Step 3: Cross multiply
    18,555.14x = 27,767 × 11,538.45
  4. Step 4: Simplify right side
    18,555.14x = 320,388,141.15
  5. Step 5: Solve for x
    x = 320,388,141.15/18,555.14
  6. Step 6: Final answer
    x = 17,266.81

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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.