Home / 11,152.26-16,731.20-7,871.76

Finding the Fourth Proportional to 11,152.26, 16,731.20 and 7,871.76

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Solution

The fourth proportional to 11,152.26, 16,731.20 and 7,871.76 is: 11,809.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.26 : 16,731.20 = 7,871.76 : x
  2. Step 2: Convert to fraction form
    11,152.26/16,731.20 = 7,871.76/x
  3. Step 3: Cross multiply
    11,152.26x = 16,731.20 × 7,871.76
  4. Step 4: Simplify right side
    11,152.26x = 131,704,010.59
  5. Step 5: Solve for x
    x = 131,704,010.59/11,152.26
  6. Step 6: Final answer
    x = 11,809.63

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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.