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Finding the Fourth Proportional to 18,777.75, 25,919.07 and 10,825.29

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Solution

The fourth proportional to 18,777.75, 25,919.07 and 10,825.29 is: 14,942.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.75 : 25,919.07 = 10,825.29 : x
  2. Step 2: Convert to fraction form
    18,777.75/25,919.07 = 10,825.29/x
  3. Step 3: Cross multiply
    18,777.75x = 25,919.07 × 10,825.29
  4. Step 4: Simplify right side
    18,777.75x = 280,581,449.28
  5. Step 5: Solve for x
    x = 280,581,449.28/18,777.75
  6. Step 6: Final answer
    x = 14,942.23

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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.