Home / 33,091.20-45,662.40-19,661.76

Finding the Fourth Proportional to 33,091.20, 45,662.40 and 19,661.76

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Solution

The fourth proportional to 33,091.20, 45,662.40 and 19,661.76 is: 27,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,091.20 : 45,662.40 = 19,661.76 : x
  2. Step 2: Convert to fraction form
    33,091.20/45,662.40 = 19,661.76/x
  3. Step 3: Cross multiply
    33,091.20x = 45,662.40 × 19,661.76
  4. Step 4: Simplify right side
    33,091.20x = 897,803,149.82
  5. Step 5: Solve for x
    x = 897,803,149.82/33,091.20
  6. Step 6: Final answer
    x = 27,131.18

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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.