Home / 20,665.23-28,517.92-11,233.99

Finding the Fourth Proportional to 20,665.23, 28,517.92 and 11,233.99

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Solution

The fourth proportional to 20,665.23, 28,517.92 and 11,233.99 is: 15,502.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665.23 : 28,517.92 = 11,233.99 : x
  2. Step 2: Convert to fraction form
    20,665.23/28,517.92 = 11,233.99/x
  3. Step 3: Cross multiply
    20,665.23x = 28,517.92 × 11,233.99
  4. Step 4: Simplify right side
    20,665.23x = 320,370,098.85
  5. Step 5: Solve for x
    x = 320,370,098.85/20,665.23
  6. Step 6: Final answer
    x = 15,502.86

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1.5x scale

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.