Home / 28,965.66-43,399.89-20,178.78

Finding the Fourth Proportional to 28,965.66, 43,399.89 and 20,178.78

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Solution

The fourth proportional to 28,965.66, 43,399.89 and 20,178.78 is: 30,234.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.66 : 43,399.89 = 20,178.78 : x
  2. Step 2: Convert to fraction form
    28,965.66/43,399.89 = 20,178.78/x
  3. Step 3: Cross multiply
    28,965.66x = 43,399.89 × 20,178.78
  4. Step 4: Simplify right side
    28,965.66x = 875,756,832.33
  5. Step 5: Solve for x
    x = 875,756,832.33/28,965.66
  6. Step 6: Final answer
    x = 30,234.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.