Home / 39,812.11-54,942.30-21,908.48

Finding the Fourth Proportional to 39,812.11, 54,942.30 and 21,908.48

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Solution

The fourth proportional to 39,812.11, 54,942.30 and 21,908.48 is: 30,234.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,812.11 : 54,942.30 = 21,908.48 : x
  2. Step 2: Convert to fraction form
    39,812.11/54,942.30 = 21,908.48/x
  3. Step 3: Cross multiply
    39,812.11x = 54,942.30 × 21,908.48
  4. Step 4: Simplify right side
    39,812.11x = 1,203,702,005.99
  5. Step 5: Solve for x
    x = 1,203,702,005.99/39,812.11
  6. Step 6: Final answer
    x = 30,234.57

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1.5x scale

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.