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Finding the Fourth Proportional to 30,310.64, 41,827.80 and 16,881.90

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Solution

The fourth proportional to 30,310.64, 41,827.80 and 16,881.90 is: 23,296.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,310.64 : 41,827.80 = 16,881.90 : x
  2. Step 2: Convert to fraction form
    30,310.64/41,827.80 = 16,881.90/x
  3. Step 3: Cross multiply
    30,310.64x = 41,827.80 × 16,881.90
  4. Step 4: Simplify right side
    30,310.64x = 706,132,736.82
  5. Step 5: Solve for x
    x = 706,132,736.82/30,310.64
  6. Step 6: Final answer
    x = 23,296.53

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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.