Home / 10,640.15-15,961.32-4,071.86

Finding the Fourth Proportional to 10,640.15, 15,961.32 and 4,071.86

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Solution

The fourth proportional to 10,640.15, 15,961.32 and 4,071.86 is: 6,108.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.15 : 15,961.32 = 4,071.86 : x
  2. Step 2: Convert to fraction form
    10,640.15/15,961.32 = 4,071.86/x
  3. Step 3: Cross multiply
    10,640.15x = 15,961.32 × 4,071.86
  4. Step 4: Simplify right side
    10,640.15x = 64,992,260.46
  5. Step 5: Solve for x
    x = 64,992,260.46/10,640.15
  6. Step 6: Final answer
    x = 6,108.21

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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.