Home / 12,125.29-18,187.80-3,359.88

Finding the Fourth Proportional to 12,125.29, 18,187.80 and 3,359.88

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Solution

The fourth proportional to 12,125.29, 18,187.80 and 3,359.88 is: 5,039.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.29 : 18,187.80 = 3,359.88 : x
  2. Step 2: Convert to fraction form
    12,125.29/18,187.80 = 3,359.88/x
  3. Step 3: Cross multiply
    12,125.29x = 18,187.80 × 3,359.88
  4. Step 4: Simplify right side
    12,125.29x = 61,108,825.46
  5. Step 5: Solve for x
    x = 61,108,825.46/12,125.29
  6. Step 6: Final answer
    x = 5,039.78

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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.