Home / 28,954.89-43,439.64-8,178.39

Finding the Fourth Proportional to 28,954.89, 43,439.64 and 8,178.39

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Solution

The fourth proportional to 28,954.89, 43,439.64 and 8,178.39 is: 12,269.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,954.89 : 43,439.64 = 8,178.39 : x
  2. Step 2: Convert to fraction form
    28,954.89/43,439.64 = 8,178.39/x
  3. Step 3: Cross multiply
    28,954.89x = 43,439.64 × 8,178.39
  4. Step 4: Simplify right side
    28,954.89x = 355,266,317.38
  5. Step 5: Solve for x
    x = 355,266,317.38/28,954.89
  6. Step 6: Final answer
    x = 12,269.65

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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.