Home / 29,650.28-40,942.32-21,178.39

Finding the Fourth Proportional to 29,650.28, 40,942.32 and 21,178.39

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Solution

The fourth proportional to 29,650.28, 40,942.32 and 21,178.39 is: 29,243.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,650.28 : 40,942.32 = 21,178.39 : x
  2. Step 2: Convert to fraction form
    29,650.28/40,942.32 = 21,178.39/x
  3. Step 3: Cross multiply
    29,650.28x = 40,942.32 × 21,178.39
  4. Step 4: Simplify right side
    29,650.28x = 867,092,375.02
  5. Step 5: Solve for x
    x = 867,092,375.02/29,650.28
  6. Step 6: Final answer
    x = 29,243.99

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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.