Home / 10,511.37-15,766.98-3,115.86

Finding the Fourth Proportional to 10,511.37, 15,766.98 and 3,115.86

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Solution

The fourth proportional to 10,511.37, 15,766.98 and 3,115.86 is: 4,673.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.37 : 15,766.98 = 3,115.86 : x
  2. Step 2: Convert to fraction form
    10,511.37/15,766.98 = 3,115.86/x
  3. Step 3: Cross multiply
    10,511.37x = 15,766.98 × 3,115.86
  4. Step 4: Simplify right side
    10,511.37x = 49,127,702.30
  5. Step 5: Solve for x
    x = 49,127,702.30/10,511.37
  6. Step 6: Final answer
    x = 4,673.77

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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.