Home / 20,884.06-28,821.32-11,452.62

Finding the Fourth Proportional to 20,884.06, 28,821.32 and 11,452.62

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Solution

The fourth proportional to 20,884.06, 28,821.32 and 11,452.62 is: 15,805.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.06 : 28,821.32 = 11,452.62 : x
  2. Step 2: Convert to fraction form
    20,884.06/28,821.32 = 11,452.62/x
  3. Step 3: Cross multiply
    20,884.06x = 28,821.32 × 11,452.62
  4. Step 4: Simplify right side
    20,884.06x = 330,079,625.86
  5. Step 5: Solve for x
    x = 330,079,625.86/20,884.06
  6. Step 6: Final answer
    x = 15,805.34

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1.5x scale

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.