Home / 11,311.31-16,975.17-6,390.56

Finding the Fourth Proportional to 11,311.31, 16,975.17 and 6,390.56

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Solution

The fourth proportional to 11,311.31, 16,975.17 and 6,390.56 is: 9,590.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,311.31 : 16,975.17 = 6,390.56 : x
  2. Step 2: Convert to fraction form
    11,311.31/16,975.17 = 6,390.56/x
  3. Step 3: Cross multiply
    11,311.31x = 16,975.17 × 6,390.56
  4. Step 4: Simplify right side
    11,311.31x = 108,480,842.40
  5. Step 5: Solve for x
    x = 108,480,842.40/11,311.31
  6. Step 6: Final answer
    x = 9,590.48

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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.