Home / 39,660.57-54,731.48-21,755.84

Finding the Fourth Proportional to 39,660.57, 54,731.48 and 21,755.84

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Solution

The fourth proportional to 39,660.57, 54,731.48 and 21,755.84 is: 30,022.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660.57 : 54,731.48 = 21,755.84 : x
  2. Step 2: Convert to fraction form
    39,660.57/54,731.48 = 21,755.84/x
  3. Step 3: Cross multiply
    39,660.57x = 54,731.48 × 21,755.84
  4. Step 4: Simplify right side
    39,660.57x = 1,190,728,939.41
  5. Step 5: Solve for x
    x = 1,190,728,939.41/39,660.57
  6. Step 6: Final answer
    x = 30,022.99

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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.