Home / 20,208.22-27,890.91-12,661.02

Finding the Fourth Proportional to 20,208.22, 27,890.91 and 12,661.02

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Solution

The fourth proportional to 20,208.22, 27,890.91 and 12,661.02 is: 17,474.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.22 : 27,890.91 = 12,661.02 : x
  2. Step 2: Convert to fraction form
    20,208.22/27,890.91 = 12,661.02/x
  3. Step 3: Cross multiply
    20,208.22x = 27,890.91 × 12,661.02
  4. Step 4: Simplify right side
    20,208.22x = 353,127,453.06
  5. Step 5: Solve for x
    x = 353,127,453.06/20,208.22
  6. Step 6: Final answer
    x = 17,474.44

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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.