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Finding the Fourth Proportional to 39,195.88, 54,091.29 and 21,290.88

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Solution

The fourth proportional to 39,195.88, 54,091.29 and 21,290.88 is: 29,381.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,195.88 : 54,091.29 = 21,290.88 : x
  2. Step 2: Convert to fraction form
    39,195.88/54,091.29 = 21,290.88/x
  3. Step 3: Cross multiply
    39,195.88x = 54,091.29 × 21,290.88
  4. Step 4: Simplify right side
    39,195.88x = 1,151,651,164.44
  5. Step 5: Solve for x
    x = 1,151,651,164.44/39,195.88
  6. Step 6: Final answer
    x = 29,381.94

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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.