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Finding the Fourth Proportional to 30,276, 41,790.17 and 19,520.89

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Solution

The fourth proportional to 30,276, 41,790.17 and 19,520.89 is: 26,944.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,276 : 41,790.17 = 19,520.89 : x
  2. Step 2: Convert to fraction form
    30,276/41,790.17 = 19,520.89/x
  3. Step 3: Cross multiply
    30,276x = 41,790.17 × 19,520.89
  4. Step 4: Simplify right side
    30,276x = 815,781,311.65
  5. Step 5: Solve for x
    x = 815,781,311.65/30,276
  6. Step 6: Final answer
    x = 26,944.82

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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.