Home / 10,431.86-15,648.33-2,640.74

Finding the Fourth Proportional to 10,431.86, 15,648.33 and 2,640.74

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Solution

The fourth proportional to 10,431.86, 15,648.33 and 2,640.74 is: 3,961.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431.86 : 15,648.33 = 2,640.74 : x
  2. Step 2: Convert to fraction form
    10,431.86/15,648.33 = 2,640.74/x
  3. Step 3: Cross multiply
    10,431.86x = 15,648.33 × 2,640.74
  4. Step 4: Simplify right side
    10,431.86x = 41,323,170.96
  5. Step 5: Solve for x
    x = 41,323,170.96/10,431.86
  6. Step 6: Final answer
    x = 3,961.25

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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.