Home / 18,255.30-27,381.51-5,108.10

Finding the Fourth Proportional to 18,255.30, 27,381.51 and 5,108.10

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Solution

The fourth proportional to 18,255.30, 27,381.51 and 5,108.10 is: 7,661.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,255.30 : 27,381.51 = 5,108.10 : x
  2. Step 2: Convert to fraction form
    18,255.30/27,381.51 = 5,108.10/x
  3. Step 3: Cross multiply
    18,255.30x = 27,381.51 × 5,108.10
  4. Step 4: Simplify right side
    18,255.30x = 139,867,491.23
  5. Step 5: Solve for x
    x = 139,867,491.23/18,255.30
  6. Step 6: Final answer
    x = 7,661.75

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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.