Home / 39,660.83-54,731.56-21,755.88

Finding the Fourth Proportional to 39,660.83, 54,731.56 and 21,755.88

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Solution

The fourth proportional to 39,660.83, 54,731.56 and 21,755.88 is: 30,022.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660.83 : 54,731.56 = 21,755.88 : x
  2. Step 2: Convert to fraction form
    39,660.83/54,731.56 = 21,755.88/x
  3. Step 3: Cross multiply
    39,660.83x = 54,731.56 × 21,755.88
  4. Step 4: Simplify right side
    39,660.83x = 1,190,733,251.57
  5. Step 5: Solve for x
    x = 1,190,733,251.57/39,660.83
  6. Step 6: Final answer
    x = 30,022.90

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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.