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Finding the Fourth Proportional to 30,239.39, 41,732.89 and 16,811.90

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Solution

The fourth proportional to 30,239.39, 41,732.89 and 16,811.90 is: 23,201.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,239.39 : 41,732.89 = 16,811.90 : x
  2. Step 2: Convert to fraction form
    30,239.39/41,732.89 = 16,811.90/x
  3. Step 3: Cross multiply
    30,239.39x = 41,732.89 × 16,811.90
  4. Step 4: Simplify right side
    30,239.39x = 701,609,085.31
  5. Step 5: Solve for x
    x = 701,609,085.31/30,239.39
  6. Step 6: Final answer
    x = 23,201.82

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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.