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Finding the Fourth Proportional to 30,357.75, 41,893.88 and 16,929.57

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Solution

The fourth proportional to 30,357.75, 41,893.88 and 16,929.57 is: 23,362.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,357.75 : 41,893.88 = 16,929.57 : x
  2. Step 2: Convert to fraction form
    30,357.75/41,893.88 = 16,929.57/x
  3. Step 3: Cross multiply
    30,357.75x = 41,893.88 × 16,929.57
  4. Step 4: Simplify right side
    30,357.75x = 709,245,446.49
  5. Step 5: Solve for x
    x = 709,245,446.49/30,357.75
  6. Step 6: Final answer
    x = 23,362.91

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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.