Home / 21,273.90-31,910.84-5,691.12

Finding the Fourth Proportional to 21,273.90, 31,910.84 and 5,691.12

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Solution

The fourth proportional to 21,273.90, 31,910.84 and 5,691.12 is: 8,536.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.90 : 31,910.84 = 5,691.12 : x
  2. Step 2: Convert to fraction form
    21,273.90/31,910.84 = 5,691.12/x
  3. Step 3: Cross multiply
    21,273.90x = 31,910.84 × 5,691.12
  4. Step 4: Simplify right side
    21,273.90x = 181,608,231.73
  5. Step 5: Solve for x
    x = 181,608,231.73/21,273.90
  6. Step 6: Final answer
    x = 8,536.67

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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.