Home / 39,170.30-54,055.31-21,265.37

Finding the Fourth Proportional to 39,170.30, 54,055.31 and 21,265.37

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Solution

The fourth proportional to 39,170.30, 54,055.31 and 21,265.37 is: 29,346.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,170.30 : 54,055.31 = 21,265.37 : x
  2. Step 2: Convert to fraction form
    39,170.30/54,055.31 = 21,265.37/x
  3. Step 3: Cross multiply
    39,170.30x = 54,055.31 × 21,265.37
  4. Step 4: Simplify right side
    39,170.30x = 1,149,505,993.72
  5. Step 5: Solve for x
    x = 1,149,505,993.72/39,170.30
  6. Step 6: Final answer
    x = 29,346.37

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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.