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Finding the Fourth Proportional to 18,512.79, 27,771.82 and 6,825.10

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Solution

The fourth proportional to 18,512.79, 27,771.82 and 6,825.10 is: 10,238.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.79 : 27,771.82 = 6,825.10 : x
  2. Step 2: Convert to fraction form
    18,512.79/27,771.82 = 6,825.10/x
  3. Step 3: Cross multiply
    18,512.79x = 27,771.82 × 6,825.10
  4. Step 4: Simplify right side
    18,512.79x = 189,545,362.19
  5. Step 5: Solve for x
    x = 189,545,362.19/18,512.79
  6. Step 6: Final answer
    x = 10,238.62

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1.5x scale

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.