Home / 18,764.28-25,893.54-10,380.78

Finding the Fourth Proportional to 18,764.28, 25,893.54 and 10,380.78

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Solution

The fourth proportional to 18,764.28, 25,893.54 and 10,380.78 is: 14,324.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.28 : 25,893.54 = 10,380.78 : x
  2. Step 2: Convert to fraction form
    18,764.28/25,893.54 = 10,380.78/x
  3. Step 3: Cross multiply
    18,764.28x = 25,893.54 × 10,380.78
  4. Step 4: Simplify right side
    18,764.28x = 268,795,142.16
  5. Step 5: Solve for x
    x = 268,795,142.16/18,764.28
  6. Step 6: Final answer
    x = 14,324.83

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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.