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Finding the Fourth Proportional to 28,595.62, 42,891.36 and 9,620.38

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Solution

The fourth proportional to 28,595.62, 42,891.36 and 9,620.38 is: 14,429.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,595.62 : 42,891.36 = 9,620.38 : x
  2. Step 2: Convert to fraction form
    28,595.62/42,891.36 = 9,620.38/x
  3. Step 3: Cross multiply
    28,595.62x = 42,891.36 × 9,620.38
  4. Step 4: Simplify right side
    28,595.62x = 412,631,181.92
  5. Step 5: Solve for x
    x = 412,631,181.92/28,595.62
  6. Step 6: Final answer
    x = 14,429.87

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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.