Home / 20,992.30-31,496.63-7,841.59

Finding the Fourth Proportional to 20,992.30, 31,496.63 and 7,841.59

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Solution

The fourth proportional to 20,992.30, 31,496.63 and 7,841.59 is: 11,765.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.30 : 31,496.63 = 7,841.59 : x
  2. Step 2: Convert to fraction form
    20,992.30/31,496.63 = 7,841.59/x
  3. Step 3: Cross multiply
    20,992.30x = 31,496.63 × 7,841.59
  4. Step 4: Simplify right side
    20,992.30x = 246,983,540.89
  5. Step 5: Solve for x
    x = 246,983,540.89/20,992.30
  6. Step 6: Final answer
    x = 11,765.44

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1.5x scale

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.