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Finding the Fourth Proportional to 30,954, 42,717.28 and 19,010.56

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Solution

The fourth proportional to 30,954, 42,717.28 and 19,010.56 is: 26,235.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,954 : 42,717.28 = 19,010.56 : x
  2. Step 2: Convert to fraction form
    30,954/42,717.28 = 19,010.56/x
  3. Step 3: Cross multiply
    30,954x = 42,717.28 × 19,010.56
  4. Step 4: Simplify right side
    30,954x = 812,079,414.48
  5. Step 5: Solve for x
    x = 812,079,414.48/30,954
  6. Step 6: Final answer
    x = 26,235.04

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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.