Home / 11,415.60-15,753.23-6,379.86

Finding the Fourth Proportional to 11,415.60, 15,753.23 and 6,379.86

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Solution

The fourth proportional to 11,415.60, 15,753.23 and 6,379.86 is: 8,804.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.60 : 15,753.23 = 6,379.86 : x
  2. Step 2: Convert to fraction form
    11,415.60/15,753.23 = 6,379.86/x
  3. Step 3: Cross multiply
    11,415.60x = 15,753.23 × 6,379.86
  4. Step 4: Simplify right side
    11,415.60x = 100,503,401.95
  5. Step 5: Solve for x
    x = 100,503,401.95/11,415.60
  6. Step 6: Final answer
    x = 8,804.04

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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.