Home / 11,425.44-15,766.48-6,389.86

Finding the Fourth Proportional to 11,425.44, 15,766.48 and 6,389.86

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Solution

The fourth proportional to 11,425.44, 15,766.48 and 6,389.86 is: 8,817.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.44 : 15,766.48 = 6,389.86 : x
  2. Step 2: Convert to fraction form
    11,425.44/15,766.48 = 6,389.86/x
  3. Step 3: Cross multiply
    11,425.44x = 15,766.48 × 6,389.86
  4. Step 4: Simplify right side
    11,425.44x = 100,745,599.89
  5. Step 5: Solve for x
    x = 100,745,599.89/11,425.44
  6. Step 6: Final answer
    x = 8,817.66

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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.