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Finding the Fourth Proportional to 28,781.82, 43,175.10 and 8,005.32

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Solution

The fourth proportional to 28,781.82, 43,175.10 and 8,005.32 is: 12,008.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.82 : 43,175.10 = 8,005.32 : x
  2. Step 2: Convert to fraction form
    28,781.82/43,175.10 = 8,005.32/x
  3. Step 3: Cross multiply
    28,781.82x = 43,175.10 × 8,005.32
  4. Step 4: Simplify right side
    28,781.82x = 345,630,491.53
  5. Step 5: Solve for x
    x = 345,630,491.53/28,781.82
  6. Step 6: Final answer
    x = 12,008.64

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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.