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Finding the Fourth Proportional to 12,477.57, 18,716.48 and 3,243.57

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Solution

The fourth proportional to 12,477.57, 18,716.48 and 3,243.57 is: 4,865.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.57 : 18,716.48 = 3,243.57 : x
  2. Step 2: Convert to fraction form
    12,477.57/18,716.48 = 3,243.57/x
  3. Step 3: Cross multiply
    12,477.57x = 18,716.48 × 3,243.57
  4. Step 4: Simplify right side
    12,477.57x = 60,708,213.03
  5. Step 5: Solve for x
    x = 60,708,213.03/12,477.57
  6. Step 6: Final answer
    x = 4,865.39

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1.5x scale

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.