Home / 12,154.80-18,234.78-3,837.22

Finding the Fourth Proportional to 12,154.80, 18,234.78 and 3,837.22

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Solution

The fourth proportional to 12,154.80, 18,234.78 and 3,837.22 is: 5,756.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,154.80 : 18,234.78 = 3,837.22 : x
  2. Step 2: Convert to fraction form
    12,154.80/18,234.78 = 3,837.22/x
  3. Step 3: Cross multiply
    12,154.80x = 18,234.78 × 3,837.22
  4. Step 4: Simplify right side
    12,154.80x = 69,970,862.51
  5. Step 5: Solve for x
    x = 69,970,862.51/12,154.80
  6. Step 6: Final answer
    x = 5,756.64

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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.