Home / 39,431.30-54,414.33-21,525.62

Finding the Fourth Proportional to 39,431.30, 54,414.33 and 21,525.62

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Solution

The fourth proportional to 39,431.30, 54,414.33 and 21,525.62 is: 29,704.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,431.30 : 54,414.33 = 21,525.62 : x
  2. Step 2: Convert to fraction form
    39,431.30/54,414.33 = 21,525.62/x
  3. Step 3: Cross multiply
    39,431.30x = 54,414.33 × 21,525.62
  4. Step 4: Simplify right side
    39,431.30x = 1,171,302,190.13
  5. Step 5: Solve for x
    x = 1,171,302,190.13/39,431.30
  6. Step 6: Final answer
    x = 29,704.88

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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.