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Finding the Fourth Proportional to 12,162.66, 18,244.00 and 2,928.66

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Solution

The fourth proportional to 12,162.66, 18,244.00 and 2,928.66 is: 4,392.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,162.66 : 18,244.00 = 2,928.66 : x
  2. Step 2: Convert to fraction form
    12,162.66/18,244.00 = 2,928.66/x
  3. Step 3: Cross multiply
    12,162.66x = 18,244.00 × 2,928.66
  4. Step 4: Simplify right side
    12,162.66x = 53,430,408.29
  5. Step 5: Solve for x
    x = 53,430,408.29/12,162.66
  6. Step 6: Final answer
    x = 4,392.99

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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.