Home / 20,695.72-28,559.20-11,743.03

Finding the Fourth Proportional to 20,695.72, 28,559.20 and 11,743.03

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Solution

The fourth proportional to 20,695.72, 28,559.20 and 11,743.03 is: 16,204.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.72 : 28,559.20 = 11,743.03 : x
  2. Step 2: Convert to fraction form
    20,695.72/28,559.20 = 11,743.03/x
  3. Step 3: Cross multiply
    20,695.72x = 28,559.20 × 11,743.03
  4. Step 4: Simplify right side
    20,695.72x = 335,371,410.09
  5. Step 5: Solve for x
    x = 335,371,410.09/20,695.72
  6. Step 6: Final answer
    x = 16,204.87

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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.