Home / 18,786.38-25,925.79-10,403.66

Finding the Fourth Proportional to 18,786.38, 25,925.79 and 10,403.66

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Solution

The fourth proportional to 18,786.38, 25,925.79 and 10,403.66 is: 14,357.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.38 : 25,925.79 = 10,403.66 : x
  2. Step 2: Convert to fraction form
    18,786.38/25,925.79 = 10,403.66/x
  3. Step 3: Cross multiply
    18,786.38x = 25,925.79 × 10,403.66
  4. Step 4: Simplify right side
    18,786.38x = 269,723,104.39
  5. Step 5: Solve for x
    x = 269,723,104.39/18,786.38
  6. Step 6: Final answer
    x = 14,357.38

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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.