Home / 54,378.36-81,535.14-18,828

Finding the Fourth Proportional to 54,378.36, 81,535.14 and 18,828

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Solution

The fourth proportional to 54,378.36, 81,535.14 and 18,828 is: 28,230.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,378.36 : 81,535.14 = 18,828 : x
  2. Step 2: Convert to fraction form
    54,378.36/81,535.14 = 18,828/x
  3. Step 3: Cross multiply
    54,378.36x = 81,535.14 × 18,828
  4. Step 4: Simplify right side
    54,378.36x = 1,535,143,615.92
  5. Step 5: Solve for x
    x = 1,535,143,615.92/54,378.36
  6. Step 6: Final answer
    x = 28,230.78

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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.