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Finding the Fourth Proportional to 12,163.17, 18,252.05 and 4,372.59

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Solution

The fourth proportional to 12,163.17, 18,252.05 and 4,372.59 is: 6,561.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.17 : 18,252.05 = 4,372.59 : x
  2. Step 2: Convert to fraction form
    12,163.17/18,252.05 = 4,372.59/x
  3. Step 3: Cross multiply
    12,163.17x = 18,252.05 × 4,372.59
  4. Step 4: Simplify right side
    12,163.17x = 79,808,709.45
  5. Step 5: Solve for x
    x = 79,808,709.45/12,163.17
  6. Step 6: Final answer
    x = 6,561.51

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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.