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Finding the Fourth Proportional to 28,295.73, 42,447.99 and 8,569.59

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Solution

The fourth proportional to 28,295.73, 42,447.99 and 8,569.59 is: 12,855.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,295.73 : 42,447.99 = 8,569.59 : x
  2. Step 2: Convert to fraction form
    28,295.73/42,447.99 = 8,569.59/x
  3. Step 3: Cross multiply
    28,295.73x = 42,447.99 × 8,569.59
  4. Step 4: Simplify right side
    28,295.73x = 363,761,870.62
  5. Step 5: Solve for x
    x = 363,761,870.62/28,295.73
  6. Step 6: Final answer
    x = 12,855.72

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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.