Home / 18,257.10-27,385.32-5,109.27

Finding the Fourth Proportional to 18,257.10, 27,385.32 and 5,109.27

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Solution

The fourth proportional to 18,257.10, 27,385.32 and 5,109.27 is: 7,663.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,257.10 : 27,385.32 = 5,109.27 : x
  2. Step 2: Convert to fraction form
    18,257.10/27,385.32 = 5,109.27/x
  3. Step 3: Cross multiply
    18,257.10x = 27,385.32 × 5,109.27
  4. Step 4: Simplify right side
    18,257.10x = 139,918,993.92
  5. Step 5: Solve for x
    x = 139,918,993.92/18,257.10
  6. Step 6: Final answer
    x = 7,663.81

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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.