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Finding the Fourth Proportional to 18,633.99, 27,950.99 and 12,772.83

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Solution

The fourth proportional to 18,633.99, 27,950.99 and 12,772.83 is: 19,159.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,633.99 : 27,950.99 = 12,772.83 : x
  2. Step 2: Convert to fraction form
    18,633.99/27,950.99 = 12,772.83/x
  3. Step 3: Cross multiply
    18,633.99x = 27,950.99 × 12,772.83
  4. Step 4: Simplify right side
    18,633.99x = 357,013,179.74
  5. Step 5: Solve for x
    x = 357,013,179.74/18,633.99
  6. Step 6: Final answer
    x = 19,159.25

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Similar ratio
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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.