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Finding the Fourth Proportional to 18,532.80, 27,799.20 and 16,418.70

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Solution

The fourth proportional to 18,532.80, 27,799.20 and 16,418.70 is: 24,628.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,532.80 : 27,799.20 = 16,418.70 : x
  2. Step 2: Convert to fraction form
    18,532.80/27,799.20 = 16,418.70/x
  3. Step 3: Cross multiply
    18,532.80x = 27,799.20 × 16,418.70
  4. Step 4: Simplify right side
    18,532.80x = 456,426,725.04
  5. Step 5: Solve for x
    x = 456,426,725.04/18,532.80
  6. Step 6: Final answer
    x = 24,628.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.