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Finding the Fourth Proportional to 30,345.94, 41,878.68 and 16,917.18

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Solution

The fourth proportional to 30,345.94, 41,878.68 and 16,917.18 is: 23,346.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.94 : 41,878.68 = 16,917.18 : x
  2. Step 2: Convert to fraction form
    30,345.94/41,878.68 = 16,917.18/x
  3. Step 3: Cross multiply
    30,345.94x = 41,878.68 × 16,917.18
  4. Step 4: Simplify right side
    30,345.94x = 708,469,167.72
  5. Step 5: Solve for x
    x = 708,469,167.72/30,345.94
  6. Step 6: Final answer
    x = 23,346.42

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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.