Home / 20,820.99-31,231.28-6,029.78

Finding the Fourth Proportional to 20,820.99, 31,231.28 and 6,029.78

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Solution

The fourth proportional to 20,820.99, 31,231.28 and 6,029.78 is: 9,044.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820.99 : 31,231.28 = 6,029.78 : x
  2. Step 2: Convert to fraction form
    20,820.99/31,231.28 = 6,029.78/x
  3. Step 3: Cross multiply
    20,820.99x = 31,231.28 × 6,029.78
  4. Step 4: Simplify right side
    20,820.99x = 188,317,840.67
  5. Step 5: Solve for x
    x = 188,317,840.67/20,820.99
  6. Step 6: Final answer
    x = 9,044.62

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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.