Home / 33,139.68-45,727.92-18,990.24

Finding the Fourth Proportional to 33,139.68, 45,727.92 and 18,990.24

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Solution

The fourth proportional to 33,139.68, 45,727.92 and 18,990.24 is: 26,203.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,139.68 : 45,727.92 = 18,990.24 : x
  2. Step 2: Convert to fraction form
    33,139.68/45,727.92 = 18,990.24/x
  3. Step 3: Cross multiply
    33,139.68x = 45,727.92 × 18,990.24
  4. Step 4: Simplify right side
    33,139.68x = 868,384,175.50
  5. Step 5: Solve for x
    x = 868,384,175.50/33,139.68
  6. Step 6: Final answer
    x = 26,203.76

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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.