Home / 39,383.52-54,348.30-21,478.92

Finding the Fourth Proportional to 39,383.52, 54,348.30 and 21,478.92

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Solution

The fourth proportional to 39,383.52, 54,348.30 and 21,478.92 is: 29,640.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,383.52 : 54,348.30 = 21,478.92 : x
  2. Step 2: Convert to fraction form
    39,383.52/54,348.30 = 21,478.92/x
  3. Step 3: Cross multiply
    39,383.52x = 54,348.30 × 21,478.92
  4. Step 4: Simplify right side
    39,383.52x = 1,167,342,787.84
  5. Step 5: Solve for x
    x = 1,167,342,787.84/39,383.52
  6. Step 6: Final answer
    x = 29,640.39

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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.