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Finding the Fourth Proportional to 36,876.91, 50,890.17 and 20,960.95

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Solution

The fourth proportional to 36,876.91, 50,890.17 and 20,960.95 is: 28,926.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,876.91 : 50,890.17 = 20,960.95 : x
  2. Step 2: Convert to fraction form
    36,876.91/50,890.17 = 20,960.95/x
  3. Step 3: Cross multiply
    36,876.91x = 50,890.17 × 20,960.95
  4. Step 4: Simplify right side
    36,876.91x = 1,066,706,308.86
  5. Step 5: Solve for x
    x = 1,066,706,308.86/36,876.91
  6. Step 6: Final answer
    x = 28,926.13

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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.