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Finding the Fourth Proportional to 36,693, 50,636.34 and 21,789

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Solution

The fourth proportional to 36,693, 50,636.34 and 21,789 is: 30,068.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,693 : 50,636.34 = 21,789 : x
  2. Step 2: Convert to fraction form
    36,693/50,636.34 = 21,789/x
  3. Step 3: Cross multiply
    36,693x = 50,636.34 × 21,789
  4. Step 4: Simplify right side
    36,693x = 1,103,315,212.26
  5. Step 5: Solve for x
    x = 1,103,315,212.26/36,693
  6. Step 6: Final answer
    x = 30,068.82

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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.