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Finding the Fourth Proportional to 18,633.62, 27,950.42 and 12,772.46

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Solution

The fourth proportional to 18,633.62, 27,950.42 and 12,772.46 is: 19,158.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,633.62 : 27,950.42 = 12,772.46 : x
  2. Step 2: Convert to fraction form
    18,633.62/27,950.42 = 12,772.46/x
  3. Step 3: Cross multiply
    18,633.62x = 27,950.42 × 12,772.46
  4. Step 4: Simplify right side
    18,633.62x = 356,995,513.61
  5. Step 5: Solve for x
    x = 356,995,513.61/18,633.62
  6. Step 6: Final answer
    x = 19,158.68

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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.