Home / 18,685.96-25,786.31-10,188.43

Finding the Fourth Proportional to 18,685.96, 25,786.31 and 10,188.43

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Solution

The fourth proportional to 18,685.96, 25,786.31 and 10,188.43 is: 14,059.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.96 : 25,786.31 = 10,188.43 : x
  2. Step 2: Convert to fraction form
    18,685.96/25,786.31 = 10,188.43/x
  3. Step 3: Cross multiply
    18,685.96x = 25,786.31 × 10,188.43
  4. Step 4: Simplify right side
    18,685.96x = 262,722,039.86
  5. Step 5: Solve for x
    x = 262,722,039.86/18,685.96
  6. Step 6: Final answer
    x = 14,059.86

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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.