Home / 39,660.55-54,731.90-21,755.63

Finding the Fourth Proportional to 39,660.55, 54,731.90 and 21,755.63

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Solution

The fourth proportional to 39,660.55, 54,731.90 and 21,755.63 is: 30,022.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660.55 : 54,731.90 = 21,755.63 : x
  2. Step 2: Convert to fraction form
    39,660.55/54,731.90 = 21,755.63/x
  3. Step 3: Cross multiply
    39,660.55x = 54,731.90 × 21,755.63
  4. Step 4: Simplify right side
    39,660.55x = 1,190,726,965.60
  5. Step 5: Solve for x
    x = 1,190,726,965.60/39,660.55
  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.