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Finding the Fourth Proportional to 30,348, 41,879.82 and 16,920.36

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Solution

The fourth proportional to 30,348, 41,879.82 and 16,920.36 is: 23,349.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,348 : 41,879.82 = 16,920.36 : x
  2. Step 2: Convert to fraction form
    30,348/41,879.82 = 16,920.36/x
  3. Step 3: Cross multiply
    30,348x = 41,879.82 × 16,920.36
  4. Step 4: Simplify right side
    30,348x = 708,621,631.14
  5. Step 5: Solve for x
    x = 708,621,631.14/30,348
  6. Step 6: Final answer
    x = 23,349.86

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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.