Home / 28,709.10-43,076.21-11,172.87

Finding the Fourth Proportional to 28,709.10, 43,076.21 and 11,172.87

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Solution

The fourth proportional to 28,709.10, 43,076.21 and 11,172.87 is: 16,764.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.10 : 43,076.21 = 11,172.87 : x
  2. Step 2: Convert to fraction form
    28,709.10/43,076.21 = 11,172.87/x
  3. Step 3: Cross multiply
    28,709.10x = 43,076.21 × 11,172.87
  4. Step 4: Simplify right side
    28,709.10x = 481,284,838.56
  5. Step 5: Solve for x
    x = 481,284,838.56/28,709.10
  6. Step 6: Final answer
    x = 16,764.19

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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.