Home / 39,660.37-54,731.64-21,755.23

Finding the Fourth Proportional to 39,660.37, 54,731.64 and 21,755.23

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Solution

The fourth proportional to 39,660.37, 54,731.64 and 21,755.23 is: 30,022.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660.37 : 54,731.64 = 21,755.23 : x
  2. Step 2: Convert to fraction form
    39,660.37/54,731.64 = 21,755.23/x
  3. Step 3: Cross multiply
    39,660.37x = 54,731.64 × 21,755.23
  4. Step 4: Simplify right side
    39,660.37x = 1,190,699,416.48
  5. Step 5: Solve for x
    x = 1,190,699,416.48/39,660.37
  6. Step 6: Final answer
    x = 30,022.40

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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.