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Finding the Fourth Proportional to 28,483.72, 42,730.44 and 8,761.84

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Solution

The fourth proportional to 28,483.72, 42,730.44 and 8,761.84 is: 13,144.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,483.72 : 42,730.44 = 8,761.84 : x
  2. Step 2: Convert to fraction form
    28,483.72/42,730.44 = 8,761.84/x
  3. Step 3: Cross multiply
    28,483.72x = 42,730.44 × 8,761.84
  4. Step 4: Simplify right side
    28,483.72x = 374,397,278.41
  5. Step 5: Solve for x
    x = 374,397,278.41/28,483.72
  6. Step 6: Final answer
    x = 13,144.25

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.