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Finding the Fourth Proportional to 39,241.91, 54,153.90 and 21,336.90

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Solution

The fourth proportional to 39,241.91, 54,153.90 and 21,336.90 is: 29,444.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,241.91 : 54,153.90 = 21,336.90 : x
  2. Step 2: Convert to fraction form
    39,241.91/54,153.90 = 21,336.90/x
  3. Step 3: Cross multiply
    39,241.91x = 54,153.90 × 21,336.90
  4. Step 4: Simplify right side
    39,241.91x = 1,155,476,348.91
  5. Step 5: Solve for x
    x = 1,155,476,348.91/39,241.91
  6. Step 6: Final answer
    x = 29,444.96

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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.