Home / 13,619.29-18,788.19-11,650.99

Finding the Fourth Proportional to 13,619.29, 18,788.19 and 11,650.99

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Solution

The fourth proportional to 13,619.29, 18,788.19 and 11,650.99 is: 16,072.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.29 : 18,788.19 = 11,650.99 : x
  2. Step 2: Convert to fraction form
    13,619.29/18,788.19 = 11,650.99/x
  3. Step 3: Cross multiply
    13,619.29x = 18,788.19 × 11,650.99
  4. Step 4: Simplify right side
    13,619.29x = 218,901,013.81
  5. Step 5: Solve for x
    x = 218,901,013.81/13,619.29
  6. Step 6: Final answer
    x = 16,072.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.