Home / 18,285.56-27,428.43-5,138.04

Finding the Fourth Proportional to 18,285.56, 27,428.43 and 5,138.04

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Solution

The fourth proportional to 18,285.56, 27,428.43 and 5,138.04 is: 7,707.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.56 : 27,428.43 = 5,138.04 : x
  2. Step 2: Convert to fraction form
    18,285.56/27,428.43 = 5,138.04/x
  3. Step 3: Cross multiply
    18,285.56x = 27,428.43 × 5,138.04
  4. Step 4: Simplify right side
    18,285.56x = 140,928,370.48
  5. Step 5: Solve for x
    x = 140,928,370.48/18,285.56
  6. Step 6: Final answer
    x = 7,707.09

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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.