Home / 33,120.39-45,692.66-18,777.20

Finding the Fourth Proportional to 33,120.39, 45,692.66 and 18,777.20

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Solution

The fourth proportional to 33,120.39, 45,692.66 and 18,777.20 is: 25,904.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,120.39 : 45,692.66 = 18,777.20 : x
  2. Step 2: Convert to fraction form
    33,120.39/45,692.66 = 18,777.20/x
  3. Step 3: Cross multiply
    33,120.39x = 45,692.66 × 18,777.20
  4. Step 4: Simplify right side
    33,120.39x = 857,979,893.00
  5. Step 5: Solve for x
    x = 857,979,893.00/33,120.39
  6. Step 6: Final answer
    x = 25,904.88

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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.