Home / 39,414.70-54,391.26-21,509.92

Finding the Fourth Proportional to 39,414.70, 54,391.26 and 21,509.92

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Solution

The fourth proportional to 39,414.70, 54,391.26 and 21,509.92 is: 29,683.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,414.70 : 54,391.26 = 21,509.92 : x
  2. Step 2: Convert to fraction form
    39,414.70/54,391.26 = 21,509.92/x
  3. Step 3: Cross multiply
    39,414.70x = 54,391.26 × 21,509.92
  4. Step 4: Simplify right side
    39,414.70x = 1,169,951,651.30
  5. Step 5: Solve for x
    x = 1,169,951,651.30/39,414.70
  6. Step 6: Final answer
    x = 29,683.13

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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.