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Finding the Fourth Proportional to 12,564, 18,846.36 and 3,330

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Solution

The fourth proportional to 12,564, 18,846.36 and 3,330 is: 4,995.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,564 : 18,846.36 = 3,330 : x
  2. Step 2: Convert to fraction form
    12,564/18,846.36 = 3,330/x
  3. Step 3: Cross multiply
    12,564x = 18,846.36 × 3,330
  4. Step 4: Simplify right side
    12,564x = 62,758,378.80
  5. Step 5: Solve for x
    x = 62,758,378.80/12,564
  6. Step 6: Final answer
    x = 4,995.10

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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.