Home / 39,175.78-54,062.48-21,270.60

Finding the Fourth Proportional to 39,175.78, 54,062.48 and 21,270.60

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Solution

The fourth proportional to 39,175.78, 54,062.48 and 21,270.60 is: 29,353.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,175.78 : 54,062.48 = 21,270.60 : x
  2. Step 2: Convert to fraction form
    39,175.78/54,062.48 = 21,270.60/x
  3. Step 3: Cross multiply
    39,175.78x = 54,062.48 × 21,270.60
  4. Step 4: Simplify right side
    39,175.78x = 1,149,941,387.09
  5. Step 5: Solve for x
    x = 1,149,941,387.09/39,175.78
  6. Step 6: Final answer
    x = 29,353.38

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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.