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Finding the Fourth Proportional to 18,315.75, 27,428.82 and 16,540.82

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Solution

The fourth proportional to 18,315.75, 27,428.82 and 16,540.82 is: 24,770.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.75 : 27,428.82 = 16,540.82 : x
  2. Step 2: Convert to fraction form
    18,315.75/27,428.82 = 16,540.82/x
  3. Step 3: Cross multiply
    18,315.75x = 27,428.82 × 16,540.82
  4. Step 4: Simplify right side
    18,315.75x = 453,695,174.43
  5. Step 5: Solve for x
    x = 453,695,174.43/18,315.75
  6. Step 6: Final answer
    x = 24,770.77

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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.