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Finding the Fourth Proportional to 28,489.33, 42,739.67 and 8,767.14

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Solution

The fourth proportional to 28,489.33, 42,739.67 and 8,767.14 is: 13,152.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.33 : 42,739.67 = 8,767.14 : x
  2. Step 2: Convert to fraction form
    28,489.33/42,739.67 = 8,767.14/x
  3. Step 3: Cross multiply
    28,489.33x = 42,739.67 × 8,767.14
  4. Step 4: Simplify right side
    28,489.33x = 374,704,670.44
  5. Step 5: Solve for x
    x = 374,704,670.44/28,489.33
  6. Step 6: Final answer
    x = 13,152.46

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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.