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Finding the Fourth Proportional to 12,462, 18,693 and 4,674.48

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Solution

The fourth proportional to 12,462, 18,693 and 4,674.48 is: 7,011.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,462 : 18,693 = 4,674.48 : x
  2. Step 2: Convert to fraction form
    12,462/18,693 = 4,674.48/x
  3. Step 3: Cross multiply
    12,462x = 18,693 × 4,674.48
  4. Step 4: Simplify right side
    12,462x = 87,380,054.64
  5. Step 5: Solve for x
    x = 87,380,054.64/12,462
  6. Step 6: Final answer
    x = 7,011.72

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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.