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Finding the Fourth Proportional to 18,773.25, 25,912.86 and 10,820.79

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Solution

The fourth proportional to 18,773.25, 25,912.86 and 10,820.79 is: 14,936.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.25 : 25,912.86 = 10,820.79 : x
  2. Step 2: Convert to fraction form
    18,773.25/25,912.86 = 10,820.79/x
  3. Step 3: Cross multiply
    18,773.25x = 25,912.86 × 10,820.79
  4. Step 4: Simplify right side
    18,773.25x = 280,397,616.36
  5. Step 5: Solve for x
    x = 280,397,616.36/18,773.25
  6. Step 6: Final answer
    x = 14,936.02

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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.