Home / 39,661.24-54,732.12-21,755.92

Finding the Fourth Proportional to 39,661.24, 54,732.12 and 21,755.92

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Solution

The fourth proportional to 39,661.24, 54,732.12 and 21,755.92 is: 30,022.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,661.24 : 54,732.12 = 21,755.92 : x
  2. Step 2: Convert to fraction form
    39,661.24/54,732.12 = 21,755.92/x
  3. Step 3: Cross multiply
    39,661.24x = 54,732.12 × 21,755.92
  4. Step 4: Simplify right side
    39,661.24x = 1,190,747,624.15
  5. Step 5: Solve for x
    x = 1,190,747,624.15/39,661.24
  6. Step 6: Final answer
    x = 30,022.96

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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.