Home / 21,178.73-31,747.43-10,082.43

Finding the Fourth Proportional to 21,178.73, 31,747.43 and 10,082.43

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Solution

The fourth proportional to 21,178.73, 31,747.43 and 10,082.43 is: 15,113.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.73 : 31,747.43 = 10,082.43 : x
  2. Step 2: Convert to fraction form
    21,178.73/31,747.43 = 10,082.43/x
  3. Step 3: Cross multiply
    21,178.73x = 31,747.43 × 10,082.43
  4. Step 4: Simplify right side
    21,178.73x = 320,091,190.24
  5. Step 5: Solve for x
    x = 320,091,190.24/21,178.73
  6. Step 6: Final answer
    x = 15,113.81

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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.