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Finding the Fourth Proportional to 18,326.88, 27,474.93 and 12,763.80

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Solution

The fourth proportional to 18,326.88, 27,474.93 and 12,763.80 is: 19,134.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,326.88 : 27,474.93 = 12,763.80 : x
  2. Step 2: Convert to fraction form
    18,326.88/27,474.93 = 12,763.80/x
  3. Step 3: Cross multiply
    18,326.88x = 27,474.93 × 12,763.80
  4. Step 4: Simplify right side
    18,326.88x = 350,684,511.53
  5. Step 5: Solve for x
    x = 350,684,511.53/18,326.88
  6. Step 6: Final answer
    x = 19,134.98

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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.