Home / 39,630.84-54,691.91-21,725.85

Finding the Fourth Proportional to 39,630.84, 54,691.91 and 21,725.85

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Solution

The fourth proportional to 39,630.84, 54,691.91 and 21,725.85 is: 29,982.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630.84 : 54,691.91 = 21,725.85 : x
  2. Step 2: Convert to fraction form
    39,630.84/54,691.91 = 21,725.85/x
  3. Step 3: Cross multiply
    39,630.84x = 54,691.91 × 21,725.85
  4. Step 4: Simplify right side
    39,630.84x = 1,188,228,410.81
  5. Step 5: Solve for x
    x = 1,188,228,410.81/39,630.84
  6. Step 6: Final answer
    x = 29,982.42

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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.