Home / 10,728.80-16,091.28-2,936.96

Finding the Fourth Proportional to 10,728.80, 16,091.28 and 2,936.96

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Solution

The fourth proportional to 10,728.80, 16,091.28 and 2,936.96 is: 4,404.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,728.80 : 16,091.28 = 2,936.96 : x
  2. Step 2: Convert to fraction form
    10,728.80/16,091.28 = 2,936.96/x
  3. Step 3: Cross multiply
    10,728.80x = 16,091.28 × 2,936.96
  4. Step 4: Simplify right side
    10,728.80x = 47,259,445.71
  5. Step 5: Solve for x
    x = 47,259,445.71/10,728.80
  6. Step 6: Final answer
    x = 4,404.91

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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.