Home / 33,135.36-45,723.39-20,389.34

Finding the Fourth Proportional to 33,135.36, 45,723.39 and 20,389.34

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Solution

The fourth proportional to 33,135.36, 45,723.39 and 20,389.34 is: 28,135.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,135.36 : 45,723.39 = 20,389.34 : x
  2. Step 2: Convert to fraction form
    33,135.36/45,723.39 = 20,389.34/x
  3. Step 3: Cross multiply
    33,135.36x = 45,723.39 × 20,389.34
  4. Step 4: Simplify right side
    33,135.36x = 932,269,516.05
  5. Step 5: Solve for x
    x = 932,269,516.05/33,135.36
  6. Step 6: Final answer
    x = 28,135.19

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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.