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Finding the Fourth Proportional to 28,689.66, 43,034.49 and 8,968.32

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Solution

The fourth proportional to 28,689.66, 43,034.49 and 8,968.32 is: 13,452.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,689.66 : 43,034.49 = 8,968.32 : x
  2. Step 2: Convert to fraction form
    28,689.66/43,034.49 = 8,968.32/x
  3. Step 3: Cross multiply
    28,689.66x = 43,034.49 × 8,968.32
  4. Step 4: Simplify right side
    28,689.66x = 385,947,077.36
  5. Step 5: Solve for x
    x = 385,947,077.36/28,689.66
  6. Step 6: Final answer
    x = 13,452.48

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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.