Home / 20,351.12-28,085.42-11,851.88

Finding the Fourth Proportional to 20,351.12, 28,085.42 and 11,851.88

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Solution

The fourth proportional to 20,351.12, 28,085.42 and 11,851.88 is: 16,356.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.12 : 28,085.42 = 11,851.88 : x
  2. Step 2: Convert to fraction form
    20,351.12/28,085.42 = 11,851.88/x
  3. Step 3: Cross multiply
    20,351.12x = 28,085.42 × 11,851.88
  4. Step 4: Simplify right side
    20,351.12x = 332,864,827.90
  5. Step 5: Solve for x
    x = 332,864,827.90/20,351.12
  6. Step 6: Final answer
    x = 16,356.09

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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.