Home / 21,133.45-29,163.96-11,442.86

Finding the Fourth Proportional to 21,133.45, 29,163.96 and 11,442.86

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Solution

The fourth proportional to 21,133.45, 29,163.96 and 11,442.86 is: 15,791.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.45 : 29,163.96 = 11,442.86 : x
  2. Step 2: Convert to fraction form
    21,133.45/29,163.96 = 11,442.86/x
  3. Step 3: Cross multiply
    21,133.45x = 29,163.96 × 11,442.86
  4. Step 4: Simplify right side
    21,133.45x = 333,719,141.32
  5. Step 5: Solve for x
    x = 333,719,141.32/21,133.45
  6. Step 6: Final answer
    x = 15,791.04

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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.