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Finding the Fourth Proportional to 28,567.73, 42,858.84 and 8,577.11

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Solution

The fourth proportional to 28,567.73, 42,858.84 and 8,577.11 is: 12,867.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,567.73 : 42,858.84 = 8,577.11 : x
  2. Step 2: Convert to fraction form
    28,567.73/42,858.84 = 8,577.11/x
  3. Step 3: Cross multiply
    28,567.73x = 42,858.84 × 8,577.11
  4. Step 4: Simplify right side
    28,567.73x = 367,604,770.86
  5. Step 5: Solve for x
    x = 367,604,770.86/28,567.73
  6. Step 6: Final answer
    x = 12,867.83

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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.