Home / 39,185.90-54,076.52-21,280.91

Finding the Fourth Proportional to 39,185.90, 54,076.52 and 21,280.91

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Solution

The fourth proportional to 39,185.90, 54,076.52 and 21,280.91 is: 29,367.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,185.90 : 54,076.52 = 21,280.91 : x
  2. Step 2: Convert to fraction form
    39,185.90/54,076.52 = 21,280.91/x
  3. Step 3: Cross multiply
    39,185.90x = 54,076.52 × 21,280.91
  4. Step 4: Simplify right side
    39,185.90x = 1,150,797,338.05
  5. Step 5: Solve for x
    x = 1,150,797,338.05/39,185.90
  6. Step 6: Final answer
    x = 29,367.64

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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.