Home / 39,336.82-54,283.12-21,431.97

Finding the Fourth Proportional to 39,336.82, 54,283.12 and 21,431.97

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Solution

The fourth proportional to 39,336.82, 54,283.12 and 21,431.97 is: 29,575.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,336.82 : 54,283.12 = 21,431.97 : x
  2. Step 2: Convert to fraction form
    39,336.82/54,283.12 = 21,431.97/x
  3. Step 3: Cross multiply
    39,336.82x = 54,283.12 × 21,431.97
  4. Step 4: Simplify right side
    39,336.82x = 1,163,394,145.77
  5. Step 5: Solve for x
    x = 1,163,394,145.77/39,336.82
  6. Step 6: Final answer
    x = 29,575.20

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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.