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Finding the Fourth Proportional to 18,805.05, 28,205.13 and 8,950.59

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Solution

The fourth proportional to 18,805.05, 28,205.13 and 8,950.59 is: 13,424.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.05 : 28,205.13 = 8,950.59 : x
  2. Step 2: Convert to fraction form
    18,805.05/28,205.13 = 8,950.59/x
  3. Step 3: Cross multiply
    18,805.05x = 28,205.13 × 8,950.59
  4. Step 4: Simplify right side
    18,805.05x = 252,452,554.53
  5. Step 5: Solve for x
    x = 252,452,554.53/18,805.05
  6. Step 6: Final answer
    x = 13,424.72

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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.