Home / 15,884.94-21,921.33-8,811.82

Finding the Fourth Proportional to 15,884.94, 21,921.33 and 8,811.82

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Solution

The fourth proportional to 15,884.94, 21,921.33 and 8,811.82 is: 12,160.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,884.94 : 21,921.33 = 8,811.82 : x
  2. Step 2: Convert to fraction form
    15,884.94/21,921.33 = 8,811.82/x
  3. Step 3: Cross multiply
    15,884.94x = 21,921.33 × 8,811.82
  4. Step 4: Simplify right side
    15,884.94x = 193,166,814.12
  5. Step 5: Solve for x
    x = 193,166,814.12/15,884.94
  6. Step 6: Final answer
    x = 12,160.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.