Home / 10,954.64-16,431.15-5,403.80

Finding the Fourth Proportional to 10,954.64, 16,431.15 and 5,403.80

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Solution

The fourth proportional to 10,954.64, 16,431.15 and 5,403.80 is: 8,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,954.64 : 16,431.15 = 5,403.80 : x
  2. Step 2: Convert to fraction form
    10,954.64/16,431.15 = 5,403.80/x
  3. Step 3: Cross multiply
    10,954.64x = 16,431.15 × 5,403.80
  4. Step 4: Simplify right side
    10,954.64x = 88,790,648.37
  5. Step 5: Solve for x
    x = 88,790,648.37/10,954.64
  6. Step 6: Final answer
    x = 8,105.30

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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.