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Finding the Fourth Proportional to 13,443, 18,550.28 and 7,474.30

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Solution

The fourth proportional to 13,443, 18,550.28 and 7,474.30 is: 10,313.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443 : 18,550.28 = 7,474.30 : x
  2. Step 2: Convert to fraction form
    13,443/18,550.28 = 7,474.30/x
  3. Step 3: Cross multiply
    13,443x = 18,550.28 × 7,474.30
  4. Step 4: Simplify right side
    13,443x = 138,650,357.80
  5. Step 5: Solve for x
    x = 138,650,357.80/13,443
  6. Step 6: Final answer
    x = 10,313.94

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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.