Home / 33,087.68-45,660.87-18,939

Finding the Fourth Proportional to 33,087.68, 45,660.87 and 18,939

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Solution

The fourth proportional to 33,087.68, 45,660.87 and 18,939 is: 26,135.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,087.68 : 45,660.87 = 18,939 : x
  2. Step 2: Convert to fraction form
    33,087.68/45,660.87 = 18,939/x
  3. Step 3: Cross multiply
    33,087.68x = 45,660.87 × 18,939
  4. Step 4: Simplify right side
    33,087.68x = 864,771,216.93
  5. Step 5: Solve for x
    x = 864,771,216.93/33,087.68
  6. Step 6: Final answer
    x = 26,135.75

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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.