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Finding the Fourth Proportional to 36,243.84, 54,365.04 and 20,628

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Solution

The fourth proportional to 36,243.84, 54,365.04 and 20,628 is: 30,941.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,243.84 : 54,365.04 = 20,628 : x
  2. Step 2: Convert to fraction form
    36,243.84/54,365.04 = 20,628/x
  3. Step 3: Cross multiply
    36,243.84x = 54,365.04 × 20,628
  4. Step 4: Simplify right side
    36,243.84x = 1,121,442,045.12
  5. Step 5: Solve for x
    x = 1,121,442,045.12/36,243.84
  6. Step 6: Final answer
    x = 30,941.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.