Home / 20,521.26-30,753.80-11,149.02

Finding the Fourth Proportional to 20,521.26, 30,753.80 and 11,149.02

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Solution

The fourth proportional to 20,521.26, 30,753.80 and 11,149.02 is: 16,708.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.26 : 30,753.80 = 11,149.02 : x
  2. Step 2: Convert to fraction form
    20,521.26/30,753.80 = 11,149.02/x
  3. Step 3: Cross multiply
    20,521.26x = 30,753.80 × 11,149.02
  4. Step 4: Simplify right side
    20,521.26x = 342,874,731.28
  5. Step 5: Solve for x
    x = 342,874,731.28/20,521.26
  6. Step 6: Final answer
    x = 16,708.27

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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.