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Finding the Fourth Proportional to 28,565.82, 42,850.78 and 8,841.84

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Solution

The fourth proportional to 28,565.82, 42,850.78 and 8,841.84 is: 13,263.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,565.82 : 42,850.78 = 8,841.84 : x
  2. Step 2: Convert to fraction form
    28,565.82/42,850.78 = 8,841.84/x
  3. Step 3: Cross multiply
    28,565.82x = 42,850.78 × 8,841.84
  4. Step 4: Simplify right side
    28,565.82x = 378,879,740.64
  5. Step 5: Solve for x
    x = 378,879,740.64/28,565.82
  6. Step 6: Final answer
    x = 13,263.39

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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.