Home / 10,518.22-15,778.77-3,853.86

Finding the Fourth Proportional to 10,518.22, 15,778.77 and 3,853.86

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Solution

The fourth proportional to 10,518.22, 15,778.77 and 3,853.86 is: 5,781.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.22 : 15,778.77 = 3,853.86 : x
  2. Step 2: Convert to fraction form
    10,518.22/15,778.77 = 3,853.86/x
  3. Step 3: Cross multiply
    10,518.22x = 15,778.77 × 3,853.86
  4. Step 4: Simplify right side
    10,518.22x = 60,809,170.55
  5. Step 5: Solve for x
    x = 60,809,170.55/10,518.22
  6. Step 6: Final answer
    x = 5,781.32

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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.