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Finding the Fourth Proportional to 30,390.68, 41,934.99 and 16,960.22

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Solution

The fourth proportional to 30,390.68, 41,934.99 and 16,960.22 is: 23,402.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.68 : 41,934.99 = 16,960.22 : x
  2. Step 2: Convert to fraction form
    30,390.68/41,934.99 = 16,960.22/x
  3. Step 3: Cross multiply
    30,390.68x = 41,934.99 × 16,960.22
  4. Step 4: Simplify right side
    30,390.68x = 711,226,446.42
  5. Step 5: Solve for x
    x = 711,226,446.42/30,390.68
  6. Step 6: Final answer
    x = 23,402.79

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.