Home / 18,257.06-27,385.64-5,109.54

Finding the Fourth Proportional to 18,257.06, 27,385.64 and 5,109.54

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Solution

The fourth proportional to 18,257.06, 27,385.64 and 5,109.54 is: 7,664.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,257.06 : 27,385.64 = 5,109.54 : x
  2. Step 2: Convert to fraction form
    18,257.06/27,385.64 = 5,109.54/x
  3. Step 3: Cross multiply
    18,257.06x = 27,385.64 × 5,109.54
  4. Step 4: Simplify right side
    18,257.06x = 139,928,023.01
  5. Step 5: Solve for x
    x = 139,928,023.01/18,257.06
  6. Step 6: Final answer
    x = 7,664.32

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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.