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Finding the Fourth Proportional to 30,207.72, 41,696.16 and 19,452.72

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Solution

The fourth proportional to 30,207.72, 41,696.16 and 19,452.72 is: 26,850.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207.72 : 41,696.16 = 19,452.72 : x
  2. Step 2: Convert to fraction form
    30,207.72/41,696.16 = 19,452.72/x
  3. Step 3: Cross multiply
    30,207.72x = 41,696.16 × 19,452.72
  4. Step 4: Simplify right side
    30,207.72x = 811,103,725.56
  5. Step 5: Solve for x
    x = 811,103,725.56/30,207.72
  6. Step 6: Final answer
    x = 26,850.88

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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.