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Finding the Fourth Proportional to 28,617.66, 42,926.43 and 8,896.38

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Solution

The fourth proportional to 28,617.66, 42,926.43 and 8,896.38 is: 13,344.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,617.66 : 42,926.43 = 8,896.38 : x
  2. Step 2: Convert to fraction form
    28,617.66/42,926.43 = 8,896.38/x
  3. Step 3: Cross multiply
    28,617.66x = 42,926.43 × 8,896.38
  4. Step 4: Simplify right side
    28,617.66x = 381,889,833.32
  5. Step 5: Solve for x
    x = 381,889,833.32/28,617.66
  6. Step 6: Final answer
    x = 13,344.55

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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.